Linguist accounts are for the most part supervised by their organizations. They can be activated/deactivated automatically, but if they want to let their PMs know that they won't be able to accept the jobs for the next 3 days or a week, they have to do it externally. Having this feature incorporated within Memsource would improve the communication between Linguists and PMs as well as clarity.
Linguists are only able to inform PMs about their status externally.
Linguist can signal the unavailability for a certain period of time in Memsource directly (either by some status feature or via note when finishing the last active job).