When you learn a new rank of an ability or spell, all buttons on your currently active spec's action bars which previously used the highest available rank will be updated to use the new highest rank. To the right of the command shortcuts are gold up ( ↑) and down ( ↓) arrows to switch to alternate Action Bars (see below).
Once placed, they can be activated with a quick hotkey or mouse click. Holds any spells or abilities you place here from your Spellbook and Abilities window.
