Release : 4.7
Component : CA Test Data Manager - TDM Web Portal
We do not support what you are asking for and there is no workaround.
We can add support to have multiple OUs where we query the groups but then it would be an enhancement.
This defect has been converted to a User Story:
Defected converted DE443129 --> US637501.
Once the enhancement has been done, this Knowledge Document will be updated.