Changing Professions in Factions

I was wondering where do you change your secondary profession in factions? I brought my lvl 20 N/E in from prophecies and want to change to a N/Rt. Where do I do this? It may sound dumb to ask.....but can I do it in the desert in tyria?

Thanks in advance,
Scourage of Death

I believe it was in Senji's Corner. You can just talk to the Profession trainer and he will change your 2nd class.