Return of Reckoning

Hi im a fairly new player and iv been playing a level 25 marauder iv started to change my keybinds in the hopes of doing better in pvp however one of the keybinds i wish to change is for my different marauder arms however i don't see any options in there to make a keybind for it i just want to know if that can be done

Open the Key Mapping option from the main menu (press escape) and then select the hotbars tab. You can keybind the marauder and shadow warrior stances with Hotbar Stance Button 1 - 4.