How to set Ctrl+MMB to Orbit? How do i set my MMB + Ctrl to orbit. What is the hotkey term in keymap settings?
Very much grateful for any suggestions, Stewart
The shortcut for rotate view can be changed in user preferences. Assuming you are using 2.8 keymap, see the gif below:

Open user preferences.
Go to keymap section and search for rotate view to middle mouse in key binding.
Then you may simply change the shortcut for Ctrl + MMB from the default
MMB