bookings-calendar
If you want to hide the 'Show' options from some of the ROLES in the Calendar, change the sub-account to the role "Admin" then log into the account, go to the CALENDAR and click on "Show". Then deselect all bits you do not want to show. Then go back ROLE and change back to the appropriate ROLE.
If you want to hide the "Delete" button in booking add the following code in the "Control panel custom CSS" for the sub account: