Yes, you can create extras such as breakfast, conference rooms, dinner, or rentals, which will display in the booking form. You can also add charges for extras to a booking at any time.
You can add extras by going to "Settings > Extras > Register new". When there, you can fill in the description of your extra and how its charge should be calculated. You can choose to make it mandatory if the Extra is sold in a package.
Extras can also be added afterwards directly from the booking details page by clicking “Add extras”.