Ive taken 2 boys with me a few times each year. FOR me the only real change I made vs me solo or just taking my son was moving a bit slower from position A to B, as well as taking more time and focus on the actual set up. Meaning I spend a bit more time to make sure I find a comfortable stop for both to sit, ideally around a tree big enough to cover them and still allow me to sit in a way I can hear them and talk to them.
I like to sit in a way I can see the bird first so I can communicate with them quickly to get ready and stay still (that can just be me on my knees behind the tree they are on for an example). I really just try to make sure the set up has the least amount of challenges (like ground foliage, limbs etc) so all I really need to worry about is making sure they are not moving and have an unobstructed view of the shooting lane.
Sometimes it works out and other times we get busted, just all part of it. I told my son the past few years as he has gotten more into it that the hunts you learn the most from are the ones you fail on, so make sure you are learning and just not making the same mistakes over and over.