Rexing F1 how to mount simucube2 sqr?

Could Anyone Tell me how i can mount a simucube2 sqr to thé rexing F1 steering wheel?

I do not understand if i need to screw open the wheel from thé front or not since it only has 3 holes at thé back

Bit of a strange one… looks like there’s suppose to be a mount bolted to the wheel already. Can see in their pics on he site:

Unless the inside of those holes in the wheel have threading on them you may need to pull it apart as it looks like someone took it off

Looks like it uses 3 bolt 50.8 pcd mount

Thanks had to open up thé wheel to add attachment thé quickrelease