Setup and Offensive player in advanced play.

This is an excerpt from an article dated Feb. 20/2016 entitled "A Champion's Continuous Improvement" .  Wes Gabrielson was asked about his winning pickleball strategy.
"It’s similar to doubles tennis; it’s mainly around identifying your Setup and Offensive players and insuring you both understand your roles. ....The job of the setup person is to be rock solid with her or his dinks and place the ball so that his or her partner continues to have an opportunity to be involved in the play. When I am the offensive player, I then move more into the middle. And (my partner) will keep going cross-court when (he or she) can in the hopes that one of their returns will be a little bit “up” and I can get into the act.