Hard to tell from the pic for sure but to me Q3 looks like a female because of the spotted chest.
I found King quail (button quail) do best in pairs and pairs only, unless they were all raised together since birth. I have a group of 5 males and 3 females that were born together and they all get along. But add in one from an outside group and it's a disaster.
Even in a group of 1 male, 2 females, if they weren't all raised together, my males would kill off the "extra" female. That's just my experience. May be different for others.
If you can separate them into pairs, that's your best option.