I need help with cloning a capability.

Please any help will be appreciated. I am trying to clone a functionality from Customer BP Invoices under the AP/AR Accounting. In the Distribution field in Lines where you can perform analytical distribution I am trying to clone same functionality for a field on Sales invoice ALL : Full entry invoice named distribution also. Please any guide will be appreciated just in case, I added some screenshots thanks.

   The functionality work here in Customer BP Invoices .

  This is how it displays at the Customer BP Invoices and from this to the next screen when I select for example Amount

  I want to replicate the functionality here.

Am still relatively new to the Sage X3 system so kindly bear with me if my questions are not too well defined as per standard just in case.

Thanks People.