Can I rotate particle emmiter?
Or I need to create separate particle emmiters with different rotation?
Yes, you can rotate it the same way you would a display object.
If this kind of rotation doesn’t work the way you expect it, then a more advance way would be to access the emitter property data and modify your variables there. You’ll need to recreate the emitter to take effect, otherwise a set of different emitter data would also work fine.