Past a week, BUZZ is not letting us create a child course to a master one.
The only option we see is "Static Copy".
Is there some glitch?
There are some limitations on the type of copies that can be made of a course based on if there are student enrollments in the source course and if the source course has a master course over it. The full break-down of what type of copy can be made for these situations can be found in the article How do I create a course in Buzz? under the section Course Copy Limitations.