add raw id field for agents

tournaments/admin.py

@@ -21,6 +21,7 @@ class CustomUserAdmin(UserAdmin):
     list_display = ['email', 'first_name', 'last_name', 'username', 'date_joined', 'latest_event_club_name', 'is_active', 'event_count', 'origin', 'registration_payment_mode', 'licence_id']
     list_filter = ['is_active', 'origin']
     ordering = ['-date_joined']
+    raw_id_fields = ['agents']
     fieldsets = [
         (None, {'fields': ['id', 'username', 'email', 'password', 'first_name', 'last_name', 'is_active', 'registration_payment_mode',
             'clubs', 'country', 'phone', 'licence_id', 'umpire_code',