Issue to update Table T706Z1

Hi,

I am trying to configure international expenses in SAP ECC 6.0, but users can still not select a foreign claim country.

The Trip Schema 02 is created, but I have been told by the developer who made the analysis that below customizing entries are missing in table T706Z1 and should be added on Trip Schema 02 similarly as Trip Schema 01:

The issue is that I don't know how to add these entries from SPRO from the Define Schema and Individual Field Control section.

I don't want to add them directly in SE16... so does anbody already encounter this issue?

Is there a way to configure it via the usual customizing options?

Thanks in advance for your help!