The Project Delivery Report shows you a breakdown of how many hours of sessions have been delivered & split between Project Types.
A Project Type is a way to internally categorise your different Projects. You can edit your Project Types by navigating to 'Settings > Bookings > Project Types' . Here you can also create a new Project Type by clicking on '+ Create New'.
Returning to 'Reports > Project Delivery', if you click on the search bar to expand your search, you can filter the results to show you a breakdown of your Projects by Session and Activity Types.
You can also see the Report broken down by a Staff Member, again by using search filters after you click on the Search Bar.
Note: this excludes Sessions where Staff Members have been assigned to Sessions as Observers or Participants.