A:Answerhttps://www.powera.com/contentassets/9d8d40779b1347c5ac91fd0312d7d936/powera-enhanced-wired-controller-for-xbox-series-x-s_user-manual_1625879335.pdf
you can use the top one to program the lower ones to a button of your choice to make it easier to reach, like the left and right bumpers or triggers.