As far as I'm aware, there's never been an official answer to this, so here it is. Place everything in its normal deployment zone. Overstack as necessary, but spread things as evenly as possible (i.e., no sector can contain three ships until all of them contain two, no sector can contain four ships until all of them contain three, etc.). By the end of your first air mission phase, everything must be legally stacked. If it's not, your opponent gets to remove overstacked units until everything is legal again.
Steve
This writing business. Pencils and what-not. Over-rated if you ask me. Silly stuff. Nothing in it. --Eeyore