Use countdowns to get the kids focused and attentive
Countdowns can be used when the kids are talking, moving around or doing anything that you don't want them to do. This will get the kids quiet and in their seats.
Countdowns will help get your kids to sit down, quiet down, etc. If your kids are being noisy you can do a quick countdown. In an authoritative voice countdown, "5, 4, 3, 2, 1". Your students will quickly quiet down.
If you have someone who disobeys your command, you can subtract a point from them or their team.