With open inquiry usually a lot of teamwork is involved which may lead to some grievances between the students (students not pulling their weight vs students pulling too much of the weight, different grade satisfaction thresholds between students). As a teacher you could guide this by:
Being available during the course for students to discuss the issues
Including peer feedback on group work in the rubric
Introducing a team-charter to lets students discuss their preferred mode of work within the group, but also plan what they’d like to contribute and what they actually contributed
Having students discuss their expectations of working in the group with the group (grade, contributions, work ethics)
Working with a ‘first author/second author’ principle. Student’s need to present at least once during the course, but have to contribute to the other presentations during the course as well.