after you done all of the above then adding cheats is simple, just click on add cheat, a small box should appear, type in a meaningful name of the cheat you want to add (ex. infinite money) and then hit ok
in the list you should see the cheat with the name you added click on it then the box on the right with the header details is where you add the cheat code. simply what is left is to hit save and there you have your cheat.
one final important notice, cheats are not fully functional yet so expect something to break or straight up not work at all.
This is also not an officially supported feature (e.g. not part of nightlies or master). I wasn’t even aware it was still part of bleeding edge (BE) releases. The PR for this feature has not been updated in over a month, and needs a lot of work (and to be resubmitted) before it should be used by anyone. As such, I’ve removed this from BE, expect to see it go away in future releases.