Fronting

Fronting is an activity performed by one or more headmates, where they take control of the body and handle daily activities and communication. This can often include allowing other headmates to speak via internal communication.

In some cases it's possible for no-one to be fronting, in which case some type of default behavior takes over the body. This can surface in multiple ways, such as becoming unresponsive.

More than one headmate fronting at the same time is frequently referred to as co-fronting. This can result in them having to coordinate actions, or for their personalities to blend together.