How to connect SimLock to a bay
SimLock connects to a bay when you install it on that bay's simulator computer. Each install is tied to one simulator, so there's nothing extra to link up afterwards.
You'll find the setup under Settings, then the SimLock tab, where you download and install the software on each simulator. See How to install SimLock for the full process.
Once SimLock is running on a bay, you can turn it off for that bay anytime using the Disable SimLock toggle in the bay's settings.