In Tuckman's model of Group Dynamics, the Storming stage is where conflicts, challenges, and disagreements most commonly occur. As a Scrum Master or Scrum Team, you would be most actively involved during this stage to help the team navigate through conflicts, facilitate communication, and guide the team towards finding resolutions and working effectively together. The Forming stage is more about getting together and understanding the project, while Norming and Performing stages involve more stable and productive teamwork, respectively.