Consider priority coding such jobs. One point of contact, all calls to computer services staff should go to 6060, all support calls to newly created 60xx number. All members of the department should staff the help desk. Need to know where everyone is at all times. Central system for knowing where everyone is.
Individuals record their whereabouts.
All members of the computer services team are responsible for calling in if not returning at the expected time. Team members should communicate where they are if location changes. Improved communication on job status. All support calls should go to one number, something other than 6060. A machine with a message to call back during our regular hours when closed.