<!-- Add this to the form, right before the submit button -->
<div class="mb-6">
  <div class="flex items-center">
    <input 
      type="checkbox" 
      id="is_open" 
      name="is_open" 
      {% if team.is_open %}checked{% endif %}
      class="h-4 w-4 text-irish-green focus:ring-irish-green border-gray-300 rounded"
    >
    <label for="is_open" class="ml-2 block text-gray-700">
      Open Team (anyone can join without approval)
    </label>
  </div>
  <p class="mt-1 text-sm text-gray-500">
    If unchecked, users will need to request to join and be approved by a captain.
  </p>
</div>
