QLAB combined or separate operation

I'm hoping to write a grant for a community theater for some tech. Currently they use QLC+ for lighting, something else (freeware) for sound, and now also want projection and are looking at VPT8. I'm hoping to transition each to QLAB.

Do you have a separate Mac and license for each (lighting, sound, projection) with multiple techs in the booth, or one full license and one tech running the ques for all 3 during a show?