If you enable the “Categories” field in the search form, you can give your users the possibility to filter search results based on the selected category.
From YITH > Booking > Settings > you can set which categories to show in search forms:

- All product categories: Useful if you do not sell non-booking products.
- Choose specific product categories: Useful if you also sell non-booking products. Eg. you do not want to show the clothing category in the booking search form.