I have two companies owned by the same holding company. Each operated independently and I am told that we would like that to continue. Each has their AAD instance and associated M365 tenants, separate. No plans to merge either. So far testing has shown that I can invite whomever I want into a MS Team, guest account is created in AAD, applied to the correct group and that user now is a guest in a Team. However we would like that user to be a "member".
Work-a-rounds? Am I missing a larger configuration issue?