So, I have a gaming mouse that has the buttons on the side (where the thumb is) and I, for the life of me, cannot map out those buttons. I go into the UI, go into the targeting section, and when I click on "Target nearest enemy" I cannot map the buttons. It allows me to map to the dang keyboard, but not to my mouse. I have used the mouse with other MMOS (Rift) that operate the way I need it to. But cannot get this to work here. Any advice or solutions I may be overlooking? Thanks