Craig Larman, email@example.com. +1 214 914 7593
Read this: Supplies - for Coach Use
The best layout is a large table area for each team -- probably created by placing a set of tables together -- (e.g., 4 large table areas), where each team is surrounding their table, facing each other, on which they will set up their computers for team-based development.
If that is not possible due to size constraints, then Plan B: set it up like this: Read this: Environment - U Shaped Tables Layout
Read this: Environment - Team Based TDD exercise