Can I use the Tax Administrator Responsibility with Different Business Groups?

Hi,

I have 2 Business Groups defined in the system: A and B

Organisations defined under the Business Group A are already using Ebtax and the setup was performed using the Tax Administrator Responsibility and the profile MO: Operating Unit was defined at site level for Operating Unit A

When I try to setup Ebtax for Operating unit under Business Group B I can't because only appear the organisations for Business Group A.

I thought that maybe creating a security profile I will be able to access the setup for Business group A and Business group B using the Tax Administrator responsibility but as the Security Profiles are defined by Business Group is not a solution.