While it would be fine to just post group behaviors in your room and introduce them to students, it can also be very beneficial to create experiences where students come to recognize these behaviors on their own. Group "Skill Builders" are great activities for this. Skill Builders are non-curricular group exercises that require students to confront the ways that certain behaviors are productive (or unproductive) in group settings. The debrief of these experiences can be great places to explicitly name new group behaviors (like the ones above). These behaviors can then be posted in your classroom. The key, however, will be to constantly draw students' attention to these throughout the year and to provide feedback (or opportunities for self-evaluation).