Type groups are several of your types, grouped under a single name. Type groups can be used to easily apply costs, discounts or auto-emails to several of your types at once. Type groups are also useful for your statistics.
To create a new type group, go to the submenu type groups. Here you can give the group a name and select the types that fall within this group.
Type groups are mainly used when creating a cost, discount, or package. You can then immediately apply it to all objects in the created type group under the 'Applicability' heading. This way, you don't have to click all types individually each time.
To make the type groups visible within the 'Applicability' sections, you will have to create at least two of them. If you create only one type group, it will not be shown.
Type groups and statistics
Type groups are also excellent for analyzing your statistics. For example, do you want to know how often your 6-person holiday homes are booked compared to last year? Add all your types for 6-person holiday homes in the same type group, and then use the type group filter in the statistics submenu.