Board Thread:Questions and Answers/@comment-91.52.130.135-20130613063254/@comment-3153244-20130613113745

When you turn on epic abilities on your arms/core, they appear as icons below your monkey, in the order (from top to bottom) Left Arm, Right Arm, Core. Each click (no matter where) activates the upper-most ability. Once it is used, it disappears until it recharges, where it will take its spot at the bottom of the ability icons.

Also, I think it's left click, not right click.