After each pass, everyone who has another feedee turns a little to the right to pass to that next person. After you change sides, your first pass from the new side is always to the nearest person, on the left end of your old row. With an even number of people, there are always two people changing sides at a time, then one pass after which no one changes. With an odd number of people, there is always one person changing sides after each pass. Figure 3 shows the wheel for four people as it goes through one rotation.
Dotted lines show passes and arrows indicate movement.
Note that in the last part of Fig. 3, everyone is back to passing with the same person as in the first part, four passes earlier. Look particularly at the passes made by juggler 4, to see what each person does, namely, throws to jugglers 1,2,3,4 in succession. You can also start the wheel with one person feeding all the rest. Simply apply the rule that when you run out of people to feed, you do a quick out and in on your final pass and then feed all the people on the other side. In fact, you can start the wheel with any number of people on each side, with everyone making parallel adjacent feeds of the other side.