Limited Caller

A Limited Caller is a headmate similar to a Caller, having nearly the same abilities, but with the key difference that they can only call to a limited group of headmates.

This may include only being able to call a specific group, such as headmates from a particular source, sisasystem, layer, exclusively walk-ins, specific roles, etc.

If a limited caller calls to someone not in their determined group, then that headmate does have the option to not come when called.