Tab: Business > Labels (Bag Types module). Three settings, each overridable per kitchen:

• Bags status : Show mark delivered/returned button – Yes (default) / No. Shows the Mark delivered / returned buttons on the bag page and on the order details page for admins.
• Bags status : Don't allow to mark delivered until all items are marked packed – Yes / No (default No). When Yes, a bag cannot be marked delivered while any of its items is still unpacked.
• Bags Meals Packing status : Show mark packed button – Yes (default) / No. Shows the per-item Mark packed buttons on the order details page.

These buttons are only ever shown to admin users.