Related Questions:
How do I add a Booking/ Event Type?
How do I remove Booking/ Event Types?
Answer
Booking Type and Event Type can be updated within Organization Settings by an Admin User.
Booking Type
Go to Settings
Click on Fields
Choose Booking Types
From here you will be able to Add, Edit, archive and Delete Booking Types
Event Type
Go to Settings
Click on Fields
Choose Event Types
From here you will be able to Add, Edit, archive and Delete Event Types
Additional Information:
More information on Booking and Event Types can be found here.