Employee assigned to custom role unable to view Availability Calendar

Summary:

Employee assigned to custom role unable to view Availability Calendar.

Content (required):

We have a requirement for custom role where the employee assigned to this role must have access to 'Work Schedule Assignment' and make changes to EEs work schedules. They are not HRs/Line Managers but Administrative Assistants.

I have created a custom job role with 'Manage Schedule Assignment Administration' privilege and included required data security to enable person search. But I have observed that Availability Calendar is blank. I am not getting any results for privilege 'View Portrait Availability Card' which I read in Oracle support that it enables Availability Calendar.