There are five types of “Self-Book” templates that come with your account. You can also create additional custom templates based around these five template types. If you have a paid Solo account, you cannot share your custom “Self-Book" templates with others. However, if you are the master account on a Team account then any custom templates that are made in the master account will automatically appear in all of the Team member accounts.
The Team members will not be able to edit any of the custom templates that are shared with them from the master account, but they will be able to use them and add them to events in calendars.