The subjet of this post almost announce all my question. I am a pilot of my own VA, in collaboration with a punch of friends. But anyway, I would like to fly time to time as a pilot for other VA, which is managed by a friend. And obviously, without leave my VA, but using th same FSA user and password.
In a nutshell, I wonder if I could enter FSA with my user and password, and choose to fly into my own VA, or my friend's VA.

Is that possible? If so, how should I proceed?.
Thanks in advance for your answer.