Agree with Rick that the Scrum rules should be followed and that a Scrum playbook is a good idea to ensure that all the Scrum Teams are working in a consistent and standard way.

Agree with Rick that the Scrum rules should be followed but explain that different Scrum Teams may do things differently, and that’s ok. 

Discuss with Rick that if he has six Scrum Teams, he needs to implement one of the scaled Scrum approaches as those are required when many teams work together.

Ask Rick a few questions to understand why he is focused on all teams working in a consistent and standard way.  

Explain to Rick that Scrum requires a Scrum Master be dedicated to each Scrum Team. He should hire six Scrum Masters to ensure that the Scrum rules are followed.

Advise Rick that Scrum Masters can also be Developers, so he should hire two Scrum Masters and then select four Developers, one per team, to fill the Scrum Master role in each of the other Scrum Teams.

Discuss with Rick that two new Scrum Masters to the company, while acceptable per the Scrum Guide, may not be advised as they will be new and serving many teams. It could impact the Scrum Teams effectiveness.

Suggest that Rick speak with all six teams and explain the budget limitations and the need for Scrum Masters to see what input they have on how to solve the problem.

Explain to Yangling that you can only show done work at a Sprint Review, and since the work isn’t done, it wouldn’t be discussed. 

Bring Yangling’s request and the information about the new attendees to the Product Owner so that they can help find a solution.

Work with Mark, the lead developer, to show the new shopping cart on his laptop at the Sprint Review as he’s been working on it and can best demonstrate it.

Call Yangling’s boss and explain that outside participants are not allowed at a Sprint Review.