engelsystem/templates/admin_shift_preview.html

<h3>Vorschau:</h3>
<table>
    <thead>
        <tr>
            <th>
                Timeslot
            </th>
            <th>
                Entries
            </th>
        </tr>
    </thead>
    <tbody>
        %shifts_table%
    </tbody>
</table>