Hi Metin, I'm sorry but currently there is no built in way to set it up for using Alt + RMB to pan.

Currently for panning you can use any of:
- middle mouse button (no modifiers just click down and drag).
- Shift + RMB
- Shift + Alt + LMB (as in Maya I think).


> If you could provide a quick hack, like a MoI data file replacement containing
> pan control adjusted from MMB to Alt + RMB

Unfortunately I don't know of any way to do it with just a file replacement - it would need to be something that was changed in MoI's code and then a new version released, which I'm not ready to do anytime soon.

You might try looking at a keyboard remapping utility, something like this: http://matthewpalmer.net/blog/2014/01/19/remap-keyboard-keys-caps-lock-os-x-mavericks/

If you remapped your Alt key to be Shift instead while MoI was running that would do what you need since shift + RMB does do panning.

Here's another one you could try - this one looks like it supports doing special mappings just for a particular app:
http://www.keyboardmaestro.com/main/

- Michael