Someone call me?
Step 1: Determine which walls will be log. Don't install the box, just leave a tail of NM long enough to makeup during trim. If it's a switch box, label each cable and wrap the whole thing with tape.
Where every box goes, I write a number (1-4) on the stud. This tells the loggers how many 'gangs' the box needs to be. I leave them one of each size for a template.
Hopefully, your loggers will have experience with D-logs as well. Here's what they should leave you:
At this point, take a standard plastic nail-on and pull the nails and cut the clips that held the nail off. You may need to use a sawzall, chisel or rotozip to make the opening big enough to slide the box in all the way.
Screw the box into the logs to secure it.
Make it up and trim as needed. In these pix, the logs haven't been stained & finished, so I left them without devices. But if they are done when you do this, go ahead and complete the trim.
Find out in advance what the heighth is for the log courses. With my builders, it's usually 8". So I center all the receps at 12", switches at 52. Even on non-logged walls. This makes everything consistent throughout the house.
FWIW, I don't understand why most of you don't like log homes. They aren't any harder to wire than any other. It just takes more labor. So what are you complaining about? Labor = money. And that's why we do what we do, don't we?