secondary in Tyria

CAn anyone tell me where can i change my secondary profesion in Tyria with ths new updates

I see this in the new update can anyone tell m ehow this work.
Your characters can now change their secondary professions whenever they are standing in a town or outpost. PvP characters can change to any secondary profession, while Roleplaying characters can change to any profession that character has previously learned.

Ascend then go to great temple of balthasaur and pay 500g(one time) per proffession.

got yah thanks

Or unlock the professions the old fashioned way by doing the "path" quests after getting to Droknars.

Once a profession is unlocked you can then change to it while it a town using your dialog box.