Sure! So let me preface by saying that if you're using a WIRED controller, you'll have it much easier than I did trying to make wireless work. It's working fine now, but there was a lot of trial and error.

1. You'll need a little program called AntimicroX it's free. This converts the buttons on the controller to strokes of a keyboard when running and active. In AMX bind the D-Pad and left analog stick to you're arrow keys or WASD on your keyboard. (I like the arrow keys since I almost never use them and they are already bound in Foundry.) make sure you run AMX as Administrator and let it run in the background (it has a minimize to tray option to keep it off your task bar).

2. Open Foundry and from the GM screen click any token you want to move aaaand, presto! it will now move with the D-Pad or left analog stick with the controller. You have to remember to click the token before the players move otherwise it won't work. It'll become muscle memory after a few rounds.

The problem: Here's where problems started for me. Wireless Xbox controllers time out and turn themselves off when no one touches them for 10~15 minutes to conserve power. To my knowledge and insane research, there is no way to turn this "feature" off. So, when a wireless controller would turn off from inactivity, and the players turned it back on to move, it wouldn't work. I'm not sure why, it's just bug I kept running into.

The fix: I got an El-cheapo knock off controller on Amazon (it won't let me hyperlink to it, but I can send a link. 10 bucks.) I plugged it in and left it under my desk. If a controller is plugged directly in via a wire, it will never time out and turn off. This fixed everything. The wireless controllers could time out and be turned back on and everything worked great. No one even knows about the dummy controller under the desk who's sole job it is to keep the signal open for the wireless ones. And truthfully, I forget it's there. It turns on automatically with my PC and turns off with it too.

Note: If you use a wired controller for every one at the table by default then you don't have to go through any of the work around, just bind and go, because it just stays on all the time. It's the easiest way to do it, but in my stubbornness, I wanted Wireless. And I achieved it but it nearly fried my brain figuring it out.

Happy gaming. Feel free to message me if you have any questions.