Yes, in the other addons, provided they have a page that let you inspect/change their hotkeys. We surely have ours but, only for the key we added to the sim.
The GSX editor uses the standard Slew keys so, there wasn't any need to add their configuration in GSX, since you can do that from the Controls menu of the simulator but, if another add-on has stolen that key, there are no other option that acting on that one.