Ok habit from last guild ,all druids had battle res and innervate on macros that would announce in raid u are goin to cast so if priest calls for innervate u will see message castin innervate,same for battle res this helps avoid dual castin resses and innervates. Just make macro
/raid casting battle res %t
now if you see this and u are second gives u chance to move so spell dont cast and first one to start casts ,innervate works same way
/raid casting innervate %t
the %t for those unfamiliar is whatever your target is .