Hi my car comes with the spare wheel, but I'm wondering if something is missing.

On the "foam" ring that the spare wheel sits on, there is on the left a round recess that you could use for the locking wheel nut, but the locking wheel nut stores higher up just under the boot floor.

so my question is what if anything goes in there ? RRS in chilli red 2014 HSE with a few options, also general grabber AT3 tyres as it does go off road and gets dirty