I need to be able to have User Defined Fields always editable for reference information.

Case in point, Purchase Order Approvals. 

When a PO is rejected, we have a user defined field on the PO screen where we will place simple notes about the rejection. i.e. “too many”

Manager needs to hit reject and edit the user defined fields without placing the PO on Hold. 

If we have to place the PO on Hold, then the status of that PO will revert back to pending approval, on hold, etc, instead of keeping the “Rejected” status in place. 

Basically I need a PO writer to clearly see that their PO is rejected in the “Status” column on the main Purchase Orders screen, then see the notes on why it was rejected as well.