I have this resource printed and displayed in my classroom. Students are allocated teams as part of a seating plan - they are each given a number 1-4. Each number is then allocated a role. Teams move tables each lesson (indicated by a box with their team name on it). Teams are re-organised every half term. Roles and numbers are also changed half termly - as many students may retain the same number but in a different team! Hope that all makes sense. I will probably put together a help sheet to go with this resource at some point. Please let me know how useful you find these.