Update Fields Record Learning Tool

[Gi]

When a user goes to Learning/Links-Clicks on 'Add Learning History/External Request, they are presented with a form with fields to answer. 

We are looking to remove fields that are not needed for employee to complete such as CPE hours, Credit, Contact, Instructor ID, Instructor Name.

KBA states these are standard fields and we can't remove them: https://me.sap.com/notes/2586576/E 

We are looking to also add Manager Approval to confirm their employee in fact took the training in that same form. There is this KBA: https://me.sap.com/notes/2423138

Anyone have experience with this in wanting to update the screen attached?

Thanks.