diff --git a/history.php b/history.php
index 8831f6b..23920c1 100755
--- a/history.php
+++ b/history.php
@@ -1,5 +1,4 @@
 <?php
-// PHP-Logik muss VOR dem HTML kommen!
 include('inc/check_login.php');
 include('inc/db.php');
 include('inc/helpers.php');
@@ -38,7 +37,7 @@ function get_all_meeting_details($conn)
         JOIN colors c ON m.color_id = c.id
         LEFT JOIN meeting_teilnehmer mt ON m.id = mt.meeting_id
         LEFT JOIN users u ON mt.user_id = u.id
-        WHERE m.meeting_date < CURDATE()
+        WHERE is_completed = 1
         ORDER BY m.meeting_date DESC, u.username ASC
     ";
 
@@ -103,65 +102,15 @@ $colors = mysqli_fetch_all($colors_result, MYSQLI_ASSOC);
 
 // Hier wird die Funktion aufgerufen, nachdem sie definiert wurde
 $all_meetings = get_all_meeting_details($conn);
-?>
 
-<?php
-// Erst jetzt wird der Header inkludiert und HTML gesendet
 include('inc/header.php');
+
 ?>
 
 <div class="container mt-5">
-    <div class="collapse mt-3" id="addMeetingForm">
-        <div class="card shadow mb-4">
-            <div class="card-body">
-                <?php if (isset($_GET['status']) && $_GET['status'] == 'success'): ?>
-                    <div class="alert alert-success alert-dismissible fade show" role="alert">
-                        Treffen erfolgreich hinzugefügt.
-                        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
-                    </div>
-                <?php elseif (isset($_GET['status']) && $_GET['status'] == 'deleted'): ?>
-                    <div class="alert alert-success alert-dismissible fade show" role="alert">
-                        Treffen erfolgreich gelöscht.
-                        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
-                    </div>
-                <?php elseif (isset($error_message)): ?>
-                    <div class="alert alert-danger" role="alert">
-                        <?= $error_message ?>
-                    </div>
-                <?php endif; ?>
-
-                <form action="history.php" method="POST">
-                    <div class="row">
-                        <div class="col-md-4 mb-3">
-                            <label for="meeting_date" class="form-label">Datum des Treffens</label>
-                            <input type="date" class="form-control" id="meeting_date" name="meeting_date" required>
-                        </div>
-                        <div class="col-md-4 mb-3">
-                            <label for="color_id" class="form-label">Farbvorgabe</label>
-                            <select class="form-select" id="color_id" name="color_id" required>
-                                <option value="">Wähle eine Farbe...</option>
-                                <?php foreach ($colors as $color): ?>
-                                    <option value="<?= $color['id'] ?>"><?= htmlspecialchars($color['name']) ?></option>
-                                <?php endforeach; ?>
-                            </select>
-                        </div>
-                        <div class="col-md-4 mb-3">
-                            <label for="reason" class="form-label">Grund (optional)</label>
-                            <input type="text" class="form-control" id="reason" name="reason">
-                        </div>
-                    </div>
-                    <button type="submit" name="submit_meeting" class="btn btn-primary">Treffen hinzufügen</button>
-                </form>
-            </div>
-        </div>
-        <hr class="mt-4 mb-4">
-    </div>
 
     <div class="d-flex justify-content-between align-items-center mb-4">
         <h2>Termin-History</h2>
-        <a class="btn btn-sm btn-outline-primary" data-bs-toggle="collapse" href="#addMeetingForm" role="button" aria-expanded="false" aria-controls="addMeetingForm">
-            <span class="material-symbols-outlined">add</span>
-        </a>
     </div>
 
     <?php if (empty($all_meetings)): ?>
@@ -175,14 +124,21 @@ include('inc/header.php');
                     <div class="mb-0 fs-6 fs-md-5 fw-bold">
                         <span class="fw-normal me-2">am</span><?= date('d.m.y', strtotime($meeting['date'])) ?>
                     </div>
-                    <div>
-                        <a href="admin/participant.php?id=<?= $meeting_id ?>&source=history" style="text-decoration: none; border: none; outline: none;">
-                            <span class="material-symbols-outlined text-dark">edit_calendar</span>
-                        </a>
-                        <a href="history.php?action=delete&id=<?= $meeting_id ?>" class="ms-1" style="text-decoration: none; border: none; outline: none;" onclick="return confirm('Möchtest du diesen Termin wirklich löschen?');">
-                            <span class="material-symbols-outlined text-danger">delete_outline</span>
-                        </a>
-                    </div>
+                    <?php
+                    if ($_SESSION['role'] == 'admin') {
+                    ?>
+
+                        <div>
+                            <a href="admin/participant.php?id=<?= $meeting_id ?>&source=history" style="text-decoration: none; border: none; outline: none;">
+                                <span class="material-symbols-outlined text-dark">edit_calendar</span>
+                            </a>
+                            <a href="history.php?action=delete&id=<?= $meeting_id ?>" class="ms-1" style="text-decoration: none; border: none; outline: none;" onclick="return confirm('Möchtest du diesen Termin wirklich löschen?');">
+                                <span class="material-symbols-outlined text-danger">delete_outline</span>
+                            </a>
+                        </div>
+                    <?php
+                    }
+                    ?>
                 </div>
                 <div class="card-body">
                     <div class="d-flex flex-column text-muted fst-italic mb-2">