Now if you want to set up security groups for Business Central, there is no way setting up security groups per company other than creating different security groups for every company in Business Central. For companies having multiple companies in a database this means that the number of security groups has to be a multiplication of the current user goups with the number of companies. Since this will make administration much more complex for larger companies using BC my idea is to create a functionality in Entra that can pick both security group and company for a user.