Hi Ute-Marion,
I did try your suggestion and created a custom screen sequence and assigned it to contract type 'C'. But in doing this, this screen will be the standard display screen of all users.
Requirement is to let Usergroup1 have standard display/create to RECN for contract types A-B, and custom display to contract type 'C'.
And all other users not involved should have standard display to A-B-C.