What is this routine called? (does it have a name?)
How can I set it up and be sure to bring the dancers back to their original squares.
The material has to be worked out by the caller in advance. "Progressive Squares" is generally not something that is sight-called.
The general idea is that you send some couples one direction, and other couples another direction, call a few calls, then send them back. Dancers usually progress to the next square only with another dancer from their same original square.