Multi-author publications are the norm in business and the professions. Most take far too long to complete, not because of the number of people involved, but because too often the team leading the project doesn’t take the time to make the process explicit and get buy-in from everyone involved at the start. What multi-author projects need is traffic control!
These kinds of skills should be integrated into graduate and post-grad programs. Currently, we learn these kinds of tips/ skills by experience on the job, which can be very inefficient. My last formal position was Director for Africa at the International Water Management Institute -- by then I had learned some of these skills, the hard way. I remain very active as a consultant and still work as a leader of teams working on international development.
Douglas James Merrey