Collaborative workshops (Type C courses) allow for the cohort to be divided into teams.
To create a team activity, you will need to add a Team Activity Topic to your course and provide information on the problem learners will work on, as well as instructions. Those should resemble the instructions a facilitator gives participants before dividing them into groups.
The materials added under Workspace resemble those allocated to each team in their breakout rooms.
Here is a video with more details on creating a Team Activity: