Hi there
Do you mean PR05 or TRIP (PR05 contains the expense types!) - Have you tried enabling the editor field for the expense types in V_T706B1_B (this should fit the purpose) and you can also activate the additional entry screens for the relevant trip schema in tcode FITVFELD/FITVFELD_WEB
The 2nd issue .. the header details generally should be included, cant think why it wouldnt but are you using the standard form PTRV_EXPENSE_FORM?
cheers
Sally