ground equipment coordinator
This person will have to be switched on as he/she needs to have vital equipment where ever the work is not being carried out.
Case in point 2 Q400 fuel tank probes (different A/C) to be changed in BNE, vital piece of equipment in CNS where both probes should have be changed days previously by 3rd party maintenance.
Engineer's can only raise MEL to keep A/C flying, crews can ground them when they get the willies about climbing stands to do fuel dips at out stations after refuelling and prior to departure. Option carry fuel for the days flying - good luck.