Sharing a sim rig works best when the handoff takes less time than loading the track. A seat slider helps, but the next driver can still spend half a session chasing a missing button assignment or a pedal setting that belongs to someone else.
Mark the positions each driver uses
Set the seat for the first driver and check whether the slider locks securely. Record the position with a piece of removable tape on a fixed surface next to the slider, or take a photo against a reference you can find again. Repeat for the other driver. If you also move the pedal plate or wheel deck, record that position and the correct hardware procedure. Leave enough cable slack for the full adjustment range and check that the shorter driver's knees clear the wheel deck when braking.
Keep a profile and a paper backup
Save each driver's calibration, control assignments and view settings under clear names wherever the sim and device software support it. Write down which settings are shared across profiles. Keep screenshots of those values and a small button map by the rig. If a profile reloads everything except brake calibration, add that one check to the handoff routine.
Do one full swap before calling it finished. The next driver should be able to sit down, set the seat, load their settings and confirm steering and pedal inputs without asking where anything went. If the switches or the seat release are hard to reach from one position, check the rig accessories after you've measured both drivers' clearances.