Shared Parental Absence Record /Entitlement Agreements

Summary

Looking for info on Absence Record Entitlement Agreements for the employee, and NOT on configuration of Shared Parental plan/agreement

Content

For Shared Parental, On the Absence Record Entitlement Agreements -
Is there any documentation on the Product functionality to record this agreement and absence for an employee (after setup is complete). 
Any explanation of the usage of the fields and sections on this page Absence Record Entitlement Agreements.
And, is there are any instructions on if we need to add the certification for Curtailment notice or can end date the Maternity absence. 

Any pointers pls.