Can we add a DFF field in the Cost Accounts under Costing for Persons page?

Hello experts,

Client is asking if we can create/unhide a field in the Costing for Persons page that pull the same data as from the Project Code field. Is there an attribute in the DFF that we can use to do this?

Can you also let us know if it's possible to hide/unhide fields from here in the Transaction Design Studio?

Thank you.