diff --git a/backend/sql/schema.sql b/backend/sql/schema.sql
index 85329c3..107fd6f 100644
--- a/backend/sql/schema.sql
+++ b/backend/sql/schema.sql
@@ -10,7 +10,8 @@ CREATE TABLE person (
     person_dni VARCHAR(8) NOT NULL,
     person_names VARCHAR(50) NOT NULL,
     person_paternal_surname VARCHAR(30) NOT NULL,
-    person_maternal_surname VARCHAR(30) NOT NULL
+    person_maternal_surname VARCHAR(30) NOT NULL,
+    person_classroom_id INTEGER DEFAULT -1
 );
 
 CREATE TABLE course (
diff --git a/frontend/src/OnlineClassroom/ClassroomUserCreation.tsx b/frontend/src/OnlineClassroom/ClassroomUserCreation.tsx
new file mode 100644
index 0000000..d36bcd7
--- /dev/null
+++ b/frontend/src/OnlineClassroom/ClassroomUserCreation.tsx
@@ -0,0 +1,31 @@
+import { createSignal } from "solid-js";
+import { FilledButton } from "../components/FilledButton";
+import { UserPlusIcon } from "../icons/UserPlusIcon";
+import { MaterialInput } from "../components/MaterialInput";
+
+export function ClassroomUserCreation() {
+    const [email, setEmail] = createSignal("yuli.palo.apaza@gmail.com");
+    const [loading, setLoading] = createSignal(false);
+
+    return (
+        <div class="px-4 pb-4">
+            <p class="py-2">
+                O cree un nuevo usuario:
+            </p>
+
+            <form>
+                <MaterialInput
+                    resourceName="Correo"
+                    value={email()}
+                    setValue={setEmail}
+                    disabled={loading()}
+                />
+            </form>
+
+            <FilledButton class="ml-2">
+                <UserPlusIcon fill="var(--c-on-primary)" class="mr-2 relative scale-150" size={16} />
+                Crear usuario
+            </FilledButton>
+        </div>
+    );
+}
diff --git a/frontend/src/OnlineClassroom/ConnectionStatus.tsx b/frontend/src/OnlineClassroom/ConnectionStatus.tsx
index bd7dffc..cee8d2c 100644
--- a/frontend/src/OnlineClassroom/ConnectionStatus.tsx
+++ b/frontend/src/OnlineClassroom/ConnectionStatus.tsx
@@ -34,7 +34,7 @@ export function ClassroomConection() {
             <Switch fallback={"Desconectado"}>
                 <Match when={status() === "connected"}>
                     <span class="bg-c-success text-c-on-success px-2 rounded select-none font-mono">
-                        Conectado
+                        Ok
                     </span>
                 </Match>
                 <Match when={status() === "connecting"}>
diff --git a/frontend/src/OnlineClassroom/index.tsx b/frontend/src/OnlineClassroom/index.tsx
index 442f3a1..f2685d6 100644
--- a/frontend/src/OnlineClassroom/index.tsx
+++ b/frontend/src/OnlineClassroom/index.tsx
@@ -1,7 +1,11 @@
 import { Show, createSignal } from "solid-js";
 import { Search } from "../certs/Search";
 import { Person } from "../types/Person";
-import { ClassroomConection } from "./ConnectionStatus";
+import { FilledCard } from "../components/FilledCard";
+import { LinkIcon } from "../icons/LinkIcon";
+import { ClassroomUserCreation } from "./ClassroomUserCreation";
+
+type TabType = "Vinculate" | "Create";
 
 export function OnlineClassroom() {
     const [person, setPerson] = createSignal<Person | null>(null);
@@ -10,10 +14,9 @@ export function OnlineClassroom() {
         <div class="grid grid-cols-[16rem_25rem_1fr]">
             <Search setPerson={setPerson} />
             <div>
-                <ClassroomConection />
-                <Show when={person()}>
-                    <ClassroomUsers person={person()!} />
-                </Show>
+
+                <ClassroomUser person={person()!} />
+
             </div>
         </div>
     );
@@ -21,12 +24,96 @@ export function OnlineClassroom() {
 
 
 
-function ClassroomUsers(props: {person: Person}) {
+function ClassroomUser(props: {person: Person}) {
+    const [active, setActive] = createSignal<TabType>("Vinculate");
+
     return (
         <div>
-            <h2 class="text-xl">
-                Usuarios para {props.person.person_names}:
-            </h2>
+            <FilledCard class="border border-c-outline overflow-hidden">
+                <h2 class="p-3 font-bold text-xl">
+                    Persona no vinculada:
+                </h2>
+                <ClassroomTabs active={active()} setActive={setActive} />
+
+                <div class="bg-c-surface">
+                    <Show when={active() === "Vinculate"}>
+                        <ClassroomVinculation />
+                    </Show>
+                    <Show when={active() === "Create"}>
+                        <ClassroomUserCreation />
+                    </Show>
+                </div>
+
+            </FilledCard>
+        </div>
+    );
+}
+
+function ClassroomVinculation() {
+    return (
+        <div>
+            <p class="py-2 px-4">
+                Vincule un usuario existente:
+            </p>
+            <ClassroomSingleUser />
+            <ClassroomSingleUser />
+            <ClassroomSingleUser />
+        </div>
+    );
+}
+
+
+
+function ClassroomSingleUser() {
+    return (
+        <div
+            class="hover:bg-c-surface-variant hover:text-c-on-surface-variant transition-colors
+                    grid grid-cols-[auto_3rem] gap-4"
+        >
+            <div class="pl-4 py-2">
+                NOMBRE NOMBRE APELLIDO APELLIDO
+                <br />
+                <div class="grid grid-cols-[auto_10rem]">
+                    <span class="font-mono">
+                    NNAPELLA
+                    </span>
+                    <div>
+                        registrado:&nbsp;
+                        <span class="font-mono">
+                            26/05/2023
+                        </span>
+                    </div>
+                </div>
+            </div>
+            <button
+                title="Vincular usuario"
+                class="border-2 border-c-transparent hover:border-c-primary transition-colors rounded"
+            >
+                <LinkIcon fill="var(--c-primary)" />
+            </button>
+        </div>
+    );
+}
+
+
+function ClassroomTabs(props: {active: TabType, setActive: (v: TabType) => void}) {
+    const presetsClasses = () => ((props.active === "Vinculate") ? "font-bold border-c-primary" : "border-c-transparent");
+    const manualClasses = () => ((props.active === "Create") ? "font-bold border-c-primary" : "border-c-transparent");
+
+    return (
+        <div class="grid grid-cols-2">
+            <button
+                class={`py-2 border-b-4 ${presetsClasses()}`}
+                onclick={() => props.setActive("Vinculate")}
+            >
+                Vincular
+            </button>
+            <button
+                class={`py-2 border-b-4 ${manualClasses()}`}
+                onclick={() => props.setActive("Create")}
+            >
+                Crear
+            </button>
         </div>
     );
 }
diff --git a/frontend/src/certs/Search/PersonRegister.tsx b/frontend/src/certs/Search/PersonRegister.tsx
index 3ad0a42..37fa137 100644
--- a/frontend/src/certs/Search/PersonRegister.tsx
+++ b/frontend/src/certs/Search/PersonRegister.tsx
@@ -1,4 +1,5 @@
 import { createSignal } from "solid-js";
+import { MaterialInput } from "../../components/MaterialInput";
 
 export function PersonRegister(props: {dni: string, onRegister: () => void}) {
     const [paternalSurname, setPaternalSurname] = createSignal("");
@@ -48,22 +49,22 @@ export function PersonRegister(props: {dni: string, onRegister: () => void}) {
                 }}
             >
                 <MaterialInput
-                    name="Apellido paterno"
+                    resourceName="Apellido paterno"
                     value={paternalSurname()}
                     setValue={(v) => setPaternalSurname(v.toUpperCase())}
-                    loading={loading()}
+                    disabled={loading()}
                 />
                 <MaterialInput
-                    name="Apellido materno"
+                    resourceName="Apellido materno"
                     value={maternalSurname()}
                     setValue={(v) => setMaternalSurname(v.toUpperCase())}
-                    loading={loading()}
+                    disabled={loading()}
                 />
                 <MaterialInput
-                    name="Nombres"
+                    resourceName="Nombres"
                     value={names()}
                     setValue={(v) => setNames(v.toUpperCase())}
-                    loading={loading()}
+                    disabled={loading()}
                 />
 
                 <button
@@ -77,35 +78,4 @@ export function PersonRegister(props: {dni: string, onRegister: () => void}) {
     );
 }
 
-function MaterialInput(props: {
-    name: string,
-    loading: boolean,
-    value: string,
-    setValue: (v: string) => void,
-}) {
-    let inputElement: HTMLInputElement | undefined;
 
-    return (
-        <div class="relative my-6">
-            <input
-                ref={inputElement}
-                id="search-dni"
-                class="bg-c-background text-c-on-background border-c-outline border-2 rounded px-2 py-1 w-full
-                        invalid:border-c-error invalid:text-c-error
-                        focus:border-c-primary outline-none font-mono
-                        disabled:opacity-50 disabled:cursor-not-allowed"
-                type="text"
-                placeholder={props.name}
-                value={props.value}
-                required
-                onInput={(e) => props.setValue(e.target.value)}
-                disabled={props.loading}
-            />
-
-
-            <label for="search-dni" class="absolute -top-2 left-2 text-xs bg-c-surface px-1 select-none">
-                {props.name}
-            </label>
-        </div>
-    );
-}
diff --git a/frontend/src/components/Dialog.tsx b/frontend/src/components/Dialog.tsx
index 0cc5570..28c623d 100644
--- a/frontend/src/components/Dialog.tsx
+++ b/frontend/src/components/Dialog.tsx
@@ -24,7 +24,7 @@ export function Dialog(props: {onClose: () => void, children: Children, class?:
     });
 
     return (
-        <div class={`modal transition-colors ${positionClasses()}`}>
+        <div class={`modal transition-colors bg-c-background ${positionClasses()}`}>
             {props.children}
         </div>
     );
diff --git a/frontend/src/components/FilledButton.tsx b/frontend/src/components/FilledButton.tsx
new file mode 100644
index 0000000..567ed65
--- /dev/null
+++ b/frontend/src/components/FilledButton.tsx
@@ -0,0 +1,16 @@
+import { JSX } from "solid-js";
+
+export function FilledButton(props: {
+    children?: Array<JSX.Element> | JSX.Element,
+    class?: string,
+    type?: "button" | "input",
+}) {
+    return (
+        <button
+            class={`bg-c-primary text-c-on-primary px-4 py-2 rounded-full cursor-pointer mt-4
+                    disabled:opacity-50 disabled:cursor-not-allowed ${props.class}`}
+        >
+            {props.children}
+        </button>
+    );
+}
diff --git a/frontend/src/components/MaterialInput.tsx b/frontend/src/components/MaterialInput.tsx
new file mode 100644
index 0000000..189da97
--- /dev/null
+++ b/frontend/src/components/MaterialInput.tsx
@@ -0,0 +1,32 @@
+export function MaterialInput(props: {
+    resourceName: string,
+    disabled: boolean,
+    value: string,
+    setValue: (v: string) => void,
+}) {
+    let inputElement: HTMLInputElement | undefined;
+
+    return (
+        <div class="relative my-6">
+            <input
+                ref={inputElement}
+                id="search-dni"
+                class="bg-c-background text-c-on-background border-c-outline border-2 rounded px-2 py-1 w-full
+                        invalid:border-c-error invalid:text-c-error
+                        focus:border-c-primary outline-none font-mono
+                        disabled:opacity-50 disabled:cursor-not-allowed"
+                type="text"
+                placeholder={props.resourceName}
+                value={props.value}
+                required
+                onInput={(e) => props.setValue(e.target.value)}
+                disabled={props.disabled}
+            />
+
+
+            <label for="search-dni" class="absolute -top-2 left-2 text-xs bg-c-surface px-1 select-none">
+                {props.resourceName}
+            </label>
+        </div>
+    );
+}
diff --git a/frontend/src/components/TonalButton.tsx b/frontend/src/components/TonalButton.tsx
new file mode 100644
index 0000000..56c9324
--- /dev/null
+++ b/frontend/src/components/TonalButton.tsx
@@ -0,0 +1,16 @@
+import { JSX } from "solid-js";
+
+export function TonalButton(props: {
+    children?: Array<JSX.Element> | JSX.Element,
+    class?: string,
+    type?: "button" | "input",
+}) {
+    return (
+        <button
+            class="bg-c-surface-variant text-c-on-surface-variant px-4 py-2 rounded-full cursor-pointer mt-4
+                    disabled:opacity-50 disabled:cursor-not-allowed"
+        >
+            {props.children}
+        </button>
+    );
+}
diff --git a/frontend/src/icons/LinkIcon.tsx b/frontend/src/icons/LinkIcon.tsx
new file mode 100644
index 0000000..595d971
--- /dev/null
+++ b/frontend/src/icons/LinkIcon.tsx
@@ -0,0 +1,15 @@
+
+export function LinkIcon(props: {fill: string, size?: number, class?: string}) {
+    return (
+        <svg
+            xmlns="http://www.w3.org/2000/svg"
+            class={`inline-block w-6 ${props.class}`}
+            width={props.size ?? 32}
+            height={props.size ?? 32}
+            fill={props.fill}
+            viewBox="0 0 256 256"
+        >
+            <path d="M137.54,186.36a8,8,0,0,1,0,11.31l-9.94,10A56,56,0,0,1,48.38,128.4L72.5,104.28A56,56,0,0,1,149.31,102a8,8,0,1,1-10.64,12,40,40,0,0,0-54.85,1.63L59.7,139.72a40,40,0,0,0,56.58,56.58l9.94-9.94A8,8,0,0,1,137.54,186.36Zm70.08-138a56.08,56.08,0,0,0-79.22,0l-9.94,9.95a8,8,0,0,0,11.32,11.31l9.94-9.94a40,40,0,0,1,56.58,56.58L172.18,140.4A40,40,0,0,1,117.33,142,8,8,0,1,0,106.69,154a56,56,0,0,0,76.81-2.26l24.12-24.12A56.08,56.08,0,0,0,207.62,48.38Z" />
+        </svg>
+    );
+}
diff --git a/frontend/src/icons/UserPlusIcon.tsx b/frontend/src/icons/UserPlusIcon.tsx
new file mode 100644
index 0000000..d9589ce
--- /dev/null
+++ b/frontend/src/icons/UserPlusIcon.tsx
@@ -0,0 +1,15 @@
+
+export function UserPlusIcon(props: {fill: string, size?: number, class?: string}) {
+    return (
+        <svg
+            xmlns="http://www.w3.org/2000/svg"
+            class={`inline-block w-6 ${props.class}`}
+            width={props.size ?? 32}
+            height={props.size ?? 32}
+            fill={props.fill}
+            viewBox="0 0 256 256"
+        >
+            <path d="M256,136a8,8,0,0,1-8,8H232v16a8,8,0,0,1-16,0V144H200a8,8,0,0,1,0-16h16V112a8,8,0,0,1,16,0v16h16A8,8,0,0,1,256,136Zm-57.87,58.85a8,8,0,0,1-12.26,10.3C165.75,181.19,138.09,168,108,168s-57.75,13.19-77.87,37.15a8,8,0,0,1-12.25-10.3c14.94-17.78,33.52-30.41,54.17-37.17a68,68,0,1,1,71.9,0C164.6,164.44,183.18,177.07,198.13,194.85ZM108,152a52,52,0,1,0-52-52A52.06,52.06,0,0,0,108,152Z" />
+        </svg>
+    );
+}
diff --git a/frontend/src/types/Person.ts b/frontend/src/types/Person.ts
index aed5c01..cf02532 100644
--- a/frontend/src/types/Person.ts
+++ b/frontend/src/types/Person.ts
@@ -5,5 +5,6 @@ export type Person = {
     person_names: string
     person_paternal_surname: string
     person_maternal_surname: string
+    person_classroom_id: string | undefined
 }