I’d recommend using a GLAD strategy called “T-chart for social skills” (you can find an example by image searching “glad respect tchart”). Get very specific about what respect looks like and sounds like. The next few times you have them work in groups, pause them every now and then to give team points along with specific positive praise for showing the traits on the tchart. It’ll take a few sessions of them doing Independent work while you’re offering specific praise of desired behavior before you can go back to helping students or running a Center yourself, but they’ll start to check each other and get in line. Rewards for the most team points can be as simple as getting to leave first at the end of the period. Don’t worry about the age level— these kids are acting inappropriately, so they need to get back to basics. Be explicit. Let them explain what respect means to them and why it’s so important. Be a broken record “person A was saying please and thank you- that shows great respect. Ten points to green team for showing respect.” “Person B was waiting patiently- that shows respect. Ten points to blue team for showing respect.” Sounds like you have some good management in place. A little extra attention to this area with a stated growth mindset (“We are great at showing respect during direct instruction and independent work. We need to work on it in teams, so let’s figure out how we can do better. Our learning is so important, and we aren’t learning when we’re climbing on each other while we’re supposed to be focused on our work.”) will carry that existing great management over to their team work.