Extras can be assigned to a whole booking, or to individual rooms within a booking. For group bookings with individual extras (e.g. purchases of bar or restaurant items) you may choose to assign the extras to specific rooms, to make check-out easier. This can be done when the extra is first added, or anytime afterwards.
1. In the Extras tab, select Add or Edit Extras
2. In the Charge To column, you can select whether the extra is for a particular room, or for the whole booking
3. Don't forget to click Save Extras after you have made changes.
4. Now, when making invoices, you will see who each extra belongs to.