HOW I SWITCH MY profession?

How do I switch my profession?
And whare can i find skill unlock i am asking that because i want to learn the skill malign intervention that summon a bone horror
thanking you in advance barak

You can change your secondary profession in the Crystal Desert, but only after you have Ascended I believe. NPCs of the six profession are scattered throughout many of the towns in the desert, and you have to complete a task for them before they will change your secondary profession.

As for Malign Intervention, I believe you can find this skill in Kryta, Beetletun.

u have to ascend then bea a quest to change ur profession