How do I use an array to set the value on multiple variables?

So I'm working on a game where every time you play it, it has random controls. I'm using variables to determine what keys are selected, but I don't want one key to be used for two things, so I'm trying to see if I can use an array to make sure there's no overlap, however, I'm an amateur. If there's a simpler way to not have 2 or more variables be the same with or without arrays, I'd really appreciate it.

Did not fully understand the post but in general if you want non repeating values you can use a Permutation table in Advanced Random this creates randomly shuffled string of numbers which can be useful. Or yes you can use an Array fill it with the values and delete the row each time something is assigned.