Hi Chef,
A Team Chest will have a common goal that is presented to all members of the same Chef Team. The goal has to be met by the collective effort of all the Chef Team members before the Challenge timer expires. The team will be presented with 3 different targets to achieve which will earn them either a Bronze, Silver, or Gold Team Chest.
For example, the goal can be to earn a certain number of Stars collectively within the given time. Once this Challenge has started, the Stars earned by every member of the Chef Team will be counted towards the common goal.
Final rewards to players are determined by the Team Chest unlocked.