Add attendee type management and staff codes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

templates/organizer/create_breakout_session.html

@@ -3,7 +3,7 @@
 {% block title %}{{ 'create_breakout_session'|t }} - NetEvents{% endblock %}
 
 {% block content %}
-<div class="form-container">
+<div class="form-container" style="padding: 20px;">
     <h1>{{ 'create_breakout_session'|t }}</h1>
     <p class="event-info">{{ 'event'|t }}: {{ event.name }}</p>
 
@@ -20,12 +20,12 @@
 
         <div class="form-group">
             <label for="start_time">{{ 'start_time'|t }}</label>
-            <input type="datetime-local" id="start_time" name="start_time" required>
+            <input type="datetime-local" id="start_time" name="start_time" required value="{% if prefilled_date %}{{ prefilled_date }}T09:00{% endif %}">
         </div>
 
         <div class="form-group">
             <label for="end_time">{{ 'end_time'|t }}</label>
-            <input type="datetime-local" id="end_time" name="end_time" required>
+            <input type="datetime-local" id="end_time" name="end_time" required value="{% if prefilled_date %}{{ prefilled_date }}T10:00{% endif %}">
         </div>
 
         <div class="form-group">