Mention some incidents where you had to work in a team, perhaps a drama performance, or a sporting event where you had to come together with your teammates.

For me, for unsupervised I would probably talk about writing my university dissertation and not really having any contact hours with my tutor for guidance; while for team work I'd mention when I was in year 11 and as part of a group we had to make a scale model of the small estate where our school was located for a local anniversary.