MDG-C - Remove Account group and Type of customer options in finance customers and disable change button

Hello experts,

I am an ABAP developer with minimal webdynpro experience. I have the following requirements in MDG-C for finance customers. Please share any ideas you have on how to achieve them in the best and most optimal way. Thanks!

1.     Creation:

• Remove option Branch with Intercomp.billing in Finance Customer Creation.

• Remove option Intercompany in Type of Customer, for all account groups.

2.     Change Customer

• Disable change button for Change Customer if the customer’s Customer Type = Intercompany.

3.    Remove the note “Intercompany Customers” under Extension and Creation

Thanks in advanced,

Jack