I have two machines which share the dongle (the main recording/performance machine and an editing/mastering room machine that actually sits right next to the main one) (using long video cables and wireless keyboards and trackballs/pads!), and the downstairs machine where I work on stuff sometimes.
I use the software activations mostly for the downstairs one (as most of the plugins I have allow at least two activations - one of which is used on the dongle and the other of which I give to the downstairs machine) and just swap the dongle over to the neighboring machine from the recording unit when I’m editing/mastering.
Terry