Can i view as a co-pilot?
Depending on the aircraft and their default camera modes. At least for the A320, you can view as a co-pilot seat when you choose the Co-pilot camera mode from the camera toolbar menu.
You cannot sit in someone else’s plane if this is your meaning. It is a feature that has been asked for.
If you mean co-pilot in multiplayer, this is the closest thing you have right now. Haven’t used it, not sure what planes it works for / how to use it.
If you mean change the view to be the first officer, you can use the right arrow key and move yourself over.