diff --git a/public/admin/index.html b/public/admin/index.html
new file mode 100644
index 0000000..1cc13b8
--- /dev/null
+++ b/public/admin/index.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="UTF-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1.0">
+	<title>User administration - NOTXCS</title>
+	<link rel="stylesheet" href="/css/style.css">
+</head>
+<body>
+	<div class="app-shell">
+		<aside class="sidebar">
+			<h2>NOTXCS</h2>
+			<div class="user-info">Signed in as <strong id="username-display"></strong> <span id="role-badge" class="badge type-badge"></span></div>
+			<a href="/dashboard" style="display:block;margin-bottom:12px;color:var(--accent);font-size:13px;">Back to dashboard</a>
+			<button class="secondary" id="logout-btn" style="margin-bottom: 16px;">Log out</button>
+		</aside>
+
+		<main class="main">
+			<div class="main-header">
+				<h1>User administration</h1>
+			</div>
+
+			<div class="card">
+				<h3>Create user</h3>
+				<form id="add-user-form" class="inline-form">
+					<div class="field-group">
+						<label for="new-user-username">Username</label>
+						<input type="text" id="new-user-username" required>
+					</div>
+					<div class="field-group">
+						<label for="new-user-password">Password</label>
+						<input type="password" id="new-user-password" required>
+					</div>
+					<div class="field-group">
+						<label for="new-user-role">Role</label>
+						<select id="new-user-role">
+							<option value="1">User</option>
+							<option value="2">Elevated</option>
+							<option value="3">Admin</option>
+						</select>
+					</div>
+					<button type="submit" class="primary">Create user</button>
+				</form>
+			</div>
+
+			<div class="card">
+				<h3>Users</h3>
+				<div id="users-empty" class="empty-state hidden">No users found.</div>
+				<ul class="acl-list" id="users-list"></ul>
+			</div>
+		</main>
+	</div>
+
+	<script src="/js/admin.js"></script>
+</body>
+</html>
diff --git a/public/dashboard/index.html b/public/dashboard/index.html
index c67b2e6..b36d986 100644
--- a/public/dashboard/index.html
+++ b/public/dashboard/index.html
@@ -11,7 +11,7 @@
 		<aside class="sidebar">
 			<h2>NOTXCS</h2>
 			<div class="user-info">Signed in as <strong id="username-display"></strong> <span id="role-badge" class="badge type-badge"></span></div>
-			<a id="admin-link" class="hidden" href="/admin.html" style="display:block;margin-bottom:12px;color:var(--accent);font-size:13px;">Manage users</a>
+			<a id="admin-link" class="hidden" href="/admin" style="display:block;margin-bottom:12px;color:var(--accent);font-size:13px;">Manage users</a>
 			<button class="secondary" id="logout-btn" style="margin-bottom: 16px;">Log out</button>
 
 			<ul class="place-list" id="place-list"></ul>
diff --git a/public/js/admin.js b/public/js/admin.js
new file mode 100644
index 0000000..861f20d
--- /dev/null
+++ b/public/js/admin.js
@@ -0,0 +1,173 @@
+let currentUser = null;
+let users = [];
+
+const ROLE_LABELS = {
+	1: 'User',
+	2: 'Elevated',
+	3: 'Admin',
+	4: 'Superadmin'
+};
+
+async function api(path, options = {}) {
+	const res = await fetch(path, {
+		headers: { 'Content-Type': 'application/json' },
+		...options
+	});
+	const data = await res.json().catch(() => ({ success: false, message: 'Invalid response from server' }));
+	if (res.status === 401) {
+		window.location.href = '/login';
+		throw new Error('Not authenticated');
+	}
+	return data;
+}
+
+function escapeHtml(str) {
+	const div = document.createElement('div');
+	div.textContent = str;
+	return div.innerHTML;
+}
+
+async function init() {
+	const me = await api('/auth/me');
+	if (!me.success) {
+		window.location.href = '/login';
+		return;
+	}
+	if (me.user.role < 3) {
+		window.location.href = '/dashboard';
+		return;
+	}
+	currentUser = me.user;
+	document.getElementById('username-display').textContent = me.user.username;
+	document.getElementById('role-badge').textContent = ROLE_LABELS[me.user.role] || 'User';
+
+	// Only a superadmin can grant the admin role; hide that option for regular admins.
+	if (currentUser.role < 4) {
+		document.querySelector('#new-user-role option[value="3"]').remove();
+	}
+
+	await loadUsers();
+}
+
+async function loadUsers() {
+	const data = await api('/admin/users');
+	users = data.users || [];
+	renderUsersList();
+}
+
+function roleOptions(selectedRole) {
+	const canGrantAdmin = currentUser.role >= 4;
+	const options = [
+		{ value: 1, label: 'User' },
+		{ value: 2, label: 'Elevated' }
+	];
+	if (canGrantAdmin || selectedRole === 3) {
+		options.push({ value: 3, label: 'Admin' });
+	}
+	return options.map(o => `<option value="${o.value}" ${o.value === selectedRole ? 'selected' : ''}>${o.label}</option>`).join('');
+}
+
+function renderUsersList() {
+	const list = document.getElementById('users-list');
+	const empty = document.getElementById('users-empty');
+	list.innerHTML = '';
+
+	if (users.length === 0) {
+		empty.classList.remove('hidden');
+		return;
+	}
+	empty.classList.add('hidden');
+
+	users.forEach((user) => {
+		const isSuperadmin = user.role >= 4;
+		const canManage = currentUser.role >= 4 || user.role < 3;
+		const li = document.createElement('li');
+		li.className = 'acl-entry';
+
+		if (isSuperadmin) {
+			li.innerHTML = `
+				<span class="acl-description">${escapeHtml(user.username)}</span>
+				<span class="badge type-badge">Superadmin</span>
+			`;
+			list.appendChild(li);
+			return;
+		}
+
+		li.innerHTML = `
+			<span class="acl-description">${escapeHtml(user.username)}</span>
+			<select class="role-select" ${canManage ? '' : 'disabled'}>${roleOptions(user.role)}</select>
+			<input type="password" class="password-input" placeholder="New password" style="margin:0;width:160px;">
+			<button class="secondary save-btn" ${canManage ? '' : 'disabled'}>Save</button>
+			<button class="danger delete-btn" ${canManage && user.id !== currentUser.id ? '' : 'disabled'}>Delete</button>
+		`;
+
+		li.querySelector('.save-btn').addEventListener('click', () => saveUser(user.id, li));
+		li.querySelector('.delete-btn').addEventListener('click', () => deleteUser(user.id, user.username));
+
+		list.appendChild(li);
+	});
+}
+
+async function saveUser(userId, li) {
+	const role = parseInt(li.querySelector('.role-select').value, 10);
+	const password = li.querySelector('.password-input').value;
+
+	const body = { role };
+	if (password) {
+		if (password.length < 6) {
+			alert('Password must be at least 6 characters');
+			return;
+		}
+		body.password = password;
+	}
+
+	const result = await api(`/admin/users/${encodeURIComponent(userId)}`, {
+		method: 'PUT',
+		body: JSON.stringify(body)
+	});
+
+	if (result.success) {
+		await loadUsers();
+	} else {
+		alert(result.message || 'Failed to update user');
+	}
+}
+
+async function deleteUser(userId, username) {
+	if (!confirm(`Delete user "${username}"?`)) return;
+
+	const result = await api(`/admin/users/${encodeURIComponent(userId)}`, { method: 'DELETE' });
+	if (result.success) {
+		await loadUsers();
+	} else {
+		alert(result.message || 'Failed to delete user');
+	}
+}
+
+document.getElementById('add-user-form').addEventListener('submit', async (e) => {
+	e.preventDefault();
+
+	const username = document.getElementById('new-user-username').value.trim();
+	const password = document.getElementById('new-user-password').value;
+	const role = parseInt(document.getElementById('new-user-role').value, 10);
+	if (!username || !password) return;
+
+	const result = await api('/admin/users', {
+		method: 'POST',
+		body: JSON.stringify({ username, password, role })
+	});
+
+	if (result.success) {
+		document.getElementById('add-user-form').reset();
+		await loadUsers();
+	} else {
+		alert(result.message || 'Failed to create user');
+	}
+});
+
+document.getElementById('logout-btn').addEventListener('click', async () => {
+	await api('/auth/logout', { method: 'POST' });
+	window.location.href = '/login';
+});
+
+init();
diff --git a/public/js/dashboard.js b/public/js/dashboard.js
index 148f58e..b23968b 100644
--- a/public/js/dashboard.js
+++ b/public/js/dashboard.js
@@ -582,6 +582,67 @@ document.getElementById('group-modal').addEventListener('click', (e) => {
 	if (e.target.id === 'group-modal') closeGroupModal();
 });
 
+// --- Shared place access (owner/elevated/admin can grant other users access to a place's settings) ---
+
+async function loadSharedAccess() {
+	if (!currentPlaceId) return;
+	const data = await api(`/dashboard/places/${encodeURIComponent(currentPlaceId)}/access`);
+	renderSharedAccessList(data.grants || []);
+}
+
+function renderSharedAccessList(grants) {
+	const list = document.getElementById('shared-access-list');
+	const empty = document.getElementById('shared-access-empty');
+	list.innerHTML = '';
+
+	if (grants.length === 0) {
+		empty.classList.remove('hidden');
+		return;
+	}
+	empty.classList.add('hidden');
+
+	grants.forEach((grant) => {
+		const li = document.createElement('li');
+		li.className = 'acl-entry';
+		li.innerHTML = `
+			<span class="acl-description">${escapeHtml(grant.username)}</span>
+			<button class="danger shared-access-revoke-btn">Revoke</button>
+		`;
+		li.querySelector('.shared-access-revoke-btn').addEventListener('click', () => revokeSharedAccess(grant.userId));
+		list.appendChild(li);
+	});
+}
+
+async function revokeSharedAccess(userId) {
+	if (!currentPlaceId) return;
+	if (!confirm('Revoke this user\'s access to the place?')) return;
+
+	await api(`/dashboard/places/${encodeURIComponent(currentPlaceId)}/access/${encodeURIComponent(userId)}`, {
+		method: 'DELETE'
+	});
+	await loadSharedAccess();
+}
+
+document.getElementById('add-shared-access-form').addEventListener('submit', async (e) => {
+	e.preventDefault();
+	if (!currentPlaceId) return;
+
+	const username = document.getElementById('shared-access-username').value.trim();
+	if (!username) return;
+
+	const result = await api(`/dashboard/places/${encodeURIComponent(currentPlaceId)}/access`, {
+		method: 'POST',
+		body: JSON.stringify({ username })
+	});
+
+	if (result.success) {
+		document.getElementById('shared-access-username').value = '';
+		await loadSharedAccess();
+	} else {
+		alert(result.message || 'Failed to grant access');
+	}
+});
+
 // --- Scan logs viewing ---
 
 let currentLogsReaderId = null;
