[AvMyuu]

i really think this is a matter of preference, most bw players i see, like july puts their hatches on 4,5,6,7 and manually selects the queen. if you arent really quick id use 4,5,6,7 for queens or you can put all queens to all control group and use shift backspace but just rebind backspace unless your left handed lol

[Kluey]

1- All hatcheries.
2- Army #3
3- Army #2
4- Army #1
5- Hatchery #1
6- Hatchery #2
7- Hatchery #3
8- Hatchery #4

9-0 are usually overlords for scouting.

A lot of Korean progamers use the 5-8 hatcheries to inject with. It's in my opinion the most reliabe way to inject because you can tap 5 and see how much time until your next inject.