Currently, when you create an Agent, you can assign a Parent Agent to them. After you create, however, you cannot change or modify who they're assigned to. You would expect to do this in the Edit Agent screen (as a Broker or Admin), and that screen lists who their Primary Agent is at the bottom of the page. You can't edit it though. You should be able to click on it, get a dropdown of available agents and change that.
Currently, when you create an Agent, you can assign a Parent Agent to them. After you create, however, you cannot change or modify who they're assigned to. You would expect to do this in the Edit Agent screen (as a Broker or Admin), and that screen lists who their Primary Agent is at the bottom of the page. You can't edit it though. You should be able to click on it, get a dropdown of available agents and change that.