Ria is a new scrum master and she has trained , certified as a scrum master. When she starts facilitating stand up meetings, the meeting always run over. Team starts discussion and hence they are not able to finish it within 15 min. Team tells her that without these discussions, the stand up is not useful and hence it is important to have these discussions. She is confused as she also thinks discussions about the work /tasks taken up by the team is helpful but she understands the importance of 15 min timebox. How can we help her ?