Click Abilities question

[Jaylah]

After returning to EQ2 from a hiatus and reinstalling and reinstalling Fetish UI, I seem to have forgotten how to make the Click Abilities cancel the spell you are currently casting before casting the Click Ability. (For example: I am casting a debuff and see a group member low in health, so I click on the single target heal ability and it automatically cancels my debuff and starts casting the heal.)

Hope that makes sense :-)

Jaylah