I run 1 pally, 3 mages and a priest and have all my party buffs keyed to F1 and F2 on all toons, F3 is for boss fights. F5 to F6 are self buffs such as mage armor etc

F1 = 30 min buffs

F2 = 10 min buffs

F3 = 10 min boss fight buff for the Pally

Priest F1

/targetparty

/cast Power Word: Fortitude

Mage1 F1

/targetparty

/cast Arcane Intellect

Mage2 F2

/targetparty

/cast Dampen Magic

Pally F2

/targetparty

/cast Blessing of Wisdom

Pally F3

/targetparty

/cast whatever that blessing is that reduces threat

I mash the F1 and F2 keys at the same time, it's quite a spectacle lol