in applicationConfiguration.custom.properties turn off centers by including:
for this example assume a clean database with two branches.
Create "group1" in BranchA (it will have search_id=1.1)
Create "group2" in BranchB (it will also have search_id=1.1)
Create "client in group1" in group1
From the group details page use "Edit office membership" to move group1 to BranchB (group1 search_id=1.2)
Create "group3" in BranchB (it will have search_id=1.2)
now "client in group1" will also show up in group3 since the search_ids for group1 and group3 are both 1.2