What is the difference between Shift Drop, Shift Cover, and Shift Request in Oracle Workforce Schedu

Summary:

I would like to understand the functional and technical differences between Shift Drop, Shift Cover, and Shift Request in Oracle Workforce Scheduling.

Specifically, I need clarification on:

• The intended business use case for each option
• How the system handles each type of transaction
• Key validation rules applied (eligibility, staffing constraints, approvals, etc.)
• Whether Shift Request is a generic flow that includes Drop and Cover scenarios or a separate process

Any official explanation or best practices would be highly appreciated.

Thanks in advance.