A second wheel is easy to set down on the seat until you need the seat. Give the spare a place near the rig where it can come off the base and go straight into storage without resting on a paddle or connector.
Choose the spot before the mount
A desk stand can work well if you have a stable surface outside the path of your hands and elbows. A rig mount keeps the wheel close, which is handy if you change rims often. Mock up its position to check that the rim and paddles clear your knee as you climb in. A wall mount frees the rail and desk but needs suitable hardware for the wall and the loaded mount.
Look at how you remove the wheel from the base and put it away. Leave room for both hands and for whatever motion the storage mount requires. If the spot forces you to twist around the monitor or walk over a cable, it will be tempting to use the seat again.
Check the interface on your actual wheel
Identify the quick release by its exact model. Compare it with the mount’s fit list and weight limits, and check whether the wheel’s paddles or buttons project far enough to touch the wall, rail, or desk. The rig accessories collection is a place to start looking for wheel storage options.
Set the wheel down carefully on the first fit and confirm it’s secure before letting go. Store any detachable cable with slack and keep the connector clear of the contact points.