by Lobsang » Fri May 08, 2015 7:00 am
a) Just go into keybindings, look for the decursive addon part and bind decurse (might have another name, too lazy to log in and check) to a key.
Hitting this key will decurse according to the priority list.
b) Keep the decursive frame on your screen, it will show a list with dispellable debuffs, just click the debuff you want to dispell (automated dispelling according to priority list isnt allways the best solution, for example int debuff on warrior if he got priority = waste of mana and gcd, dispell casters manually then).