When the disc is in the middle third of the field, 7 (deep deep) should be in a central position. 4 (short deep) will likely need to stay quite shallow to prevent some inside throws so that 2 and 3 can flare out a little bit. 5 and 6 (wings) should be paying attention to the potential offensive threats and the positions of 2 and 3, to prevent the most dangerous over-the-top throws and around-the-wall throws.
As disc swings toward side, deep deep first moves to contest near side side huck; near side wing contests closest continuation; far side wing pinches in; short deep makes center space busy.
Once the cup is in place, some things adjust. Deep deep moves toward far side so they're threatening both deep space and hammer/crossfield mid-range space. Far side wing is threatening center handler just enough so that they have to lose yards to stay safe when they swing back to middle. Short deep is covering space around wall (almost like 4th cup member). Nearside wing backs up and is threatening all scoober space.
As the disc swings back to the middle, the focus is still preventing continuation throws through the middle. The short deep may actually get closest to the disc here in order to prevent a quick continuation to a popper.
And we eventually end up back in our wall.
If the disc swings to the other side, we do the same thing: near side wing covers first continuation, far side wing pinches, deep goes first to near side before resetting to far side.
And now again we have the far side wing threatening the center handler, and the near side wing threatening the scoober space.