In nearly all softwares you use ALT+ left mouse button to orbit and the right mouse button then either to zoom or pan.
In CC and iClone it is wrong.
When I came from other softwares it's always hard again to remember that and not comfortable.

Please allow to exchange the both hotkeys: To Orbit with LMB and to Pan mit RMB.

And even better would be to be able to set "Maya" navigation hotkeys, too. There you zoom with RMB and Pan with MMB.