I'm thinking of picking up a used one for an easy cheap walkaround kit, but if I remember correctly there was something funky about how the dials are customized. I tried looking at the online manual and couldn't find what I was looking for, but the way that I'd like to set the dials is when you press the front dial it changes the ISO (I had mine set like this before) but I'm going to get the Sigma 56mm f/1.4 with the camera which doesn't have an aperture ring. Is it possible to set the lens aperture with the front dial by default and then have it change iso on the dial press? I know this isn't possible with the X-T20 so that's why I'm getting the older X-T10 (where it is for some reason).

Any help is appreciated!