When a Development Team is having trouble delivering a working Increment because they don’t understand a functional requirement, what should they do?

You are the Scrum Master of a new, to be developed product. Development is going to require 45 people. What is a good first question-for you to suggest the group thinks about when forming into teams?

What is the recommended size for a Development Team?

A Scrum Master is working with a Development Team that has members in different physical locations. The Development Team meets in a variety of meeting rooms and has much to do logistically (for example, set up conference calls) before the Daily Scrum. What action should the Scrum Master take?