If I'm reading this correctly, your using a Mac Mouse and ye can't move the camera view to aim
correctly since you cant right click and left click at the same time aye?
I had this same issue myself. What I do is use a relatively inexpensive Dell Mouse from my old PC that works. I'm pretty sure almost any mouse you hook up to your computer via USB should work.
The mouse I use is a couple years old but it works like a charm. I use the
Dell 0W1668 Mouse PS/2, but I'm sure there are others out there...
You don't have to spend a fortune on a new one, but to solve your issue.. you will have to buy another. Unfortunately all Disney
can do is recommend buying another mouse since its not their program that is the problem, its just the design of your mac mouse.
Hope that helps!