The issue is that these people are working and available for phone based
meetings, but not available for face to face meetings.

To be more specific, we do classified work, so some meetings cannot be had
over the phone.   We want to allow for meeting classifications, as well as a
status of working but remote, so that when the meeting classification
requires face to face, remote workers will appear unavailable.  Alternately,
if the meeting can be via phone, then they are available.