You can create or modify your own availability. To create or modify availability of others, you must be a Provisioning Administrator, Provisioning Manager, or a Team Manager.
To create availability for team members, a Team Manager must have Configure Delegate and Configure Availability permissions.
Go to People > Teams.
Select the team from the list that you want to create delegation.
In Add Provisioning Request Definition, ensure that team manager has Configure Delegate and Configure Availability permissions.