Scrum Master As A Facilitator
The Scrum Guide states that a Scrum Master can provide facilitation when needed, and the interpretation is that it would be ideal if the Development Team and the Product Owner were able to facilitate their own events with minimum support needed by the Scrum Master.
However, that said, in the formative early stages of learning about Agile and Scrum, the Scrum Master may be called upon to provide some facilitation in order to provide guidance and a reference model of how to organise and host the Scrum events and model the Scrum values.
Safety
In a Sprint Retrospective for example, it is imperative that the Scrum Team are at ease and can have honest and open conversation about what is not working well and suggest insightful improvements. A key ingredient for this to happen is to ensure that the Scrum Team feel safe enough to openly express their opinions in a supportive environment that values their contribution.
The Scrum Master when facilitating such events should try to provide a safe environment for the open and honest conversations to happen. This may require explicit intervention if a conversation begins to turn into accusations or blaming in order to bring the group back to a supportive mindset, or may involve implicit hosting behind the scenes such as organising our Sprint Retrospective to be done in a café or other creative environment outside of the workplace for example. The provision of safety is hard won and easily lost, and so the Scrum Master may need to be very attentive throughout the event or group meeting to ensure that it goes well and provides the highest value possible.
Equal Voice
It is common in many group meetings or events for dominant characters to take control over the current discussion, and for the perspectives of those attendees that think more and talk less to be lost in the conversation.
The Scrum Master in these situations may need to ensure that the quieter participants can voice their opinions freely with just as much airtime as those louder attendees in order for the group to make the right decisions and avoid bias. This may involve direct intervention to stop the group talking and listen to a quieter attendee’s perspective, draw attention to a particular point that was made, or more implicit approaches such as using a whiteboard to record what was said as a visible reference and reminder for the team.
Consensus or Majority
Two main approaches that may be useful for the group conversation, depending upon the context and the objective of the discussion, is to consider whether a decision should be by consensus of if the majority rules.