[PRTL ED] Rotating particle systems

[Neelke]

So what I need to do is to rotate the orb_room_portal_start particle so it looks like its turning left or right. Now, I'm not very experienced with the Particle Editor and I don't even know if this is possible. Can you guys tell me (if its possble) how to rotate the particle so it looks like its turning left or right?

A quick response is helpful

And I know I have to make a custom one.