I really don't do shipped eggs much differently at all than my own eggs, and I regularly get hatches on shipped eggs of 80% or more - I've had a 100% hatch several times - so I must be doing something right 
I let them sit fat end up in an egg carton for 24 hours after I get them. I candle and check the air cells and for any cracks. Those with air cells that are not detached go right into the incubator and I treat them just like a regular egg. Detached ones go into a different incubator without an autoturner and I don't turn them for the first few days, then just gently rock them back and forth from side to side of an egg carton until the chorio-allantoic membrane grows enough to pin the air cell back in place - usually by day ten or so.

I let them sit fat end up in an egg carton for 24 hours after I get them. I candle and check the air cells and for any cracks. Those with air cells that are not detached go right into the incubator and I treat them just like a regular egg. Detached ones go into a different incubator without an autoturner and I don't turn them for the first few days, then just gently rock them back and forth from side to side of an egg carton until the chorio-allantoic membrane grows enough to pin the air cell back in place - usually by day ten or so.