I think MIMB means what to do if "plug it in" doesn't work. Those issues are usually a firewall problem in the remote location.
Other issues would be like a user that knows nothing about IP and has no clue as to which jack to plug the patch cord into the back of the IP phone. Or the user that can't figure out how to put power on the phone or that the phone even needs power to begin with ("my phone at work doesn't have a power supply, so I shouldn't need one at home either").
MIMB, I usually just provide the Mitel Teleworker remote guide to the IT staff and let them deal with their users. I think you'll have to create one yourself if you want more detail, perhaps one with pictures, haha!
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What if I don't want to put a signature on my posts?