Learn a fixed combination pattern and then perform every role within it. The rotation means nobody becomes the specialist finisher or the specialist setter, which is the usual failure of patterned drills.
Set four poles in a diamond about twelve metres across, with a small target goal beyond it. Six players, three balls. The pattern is: a one-two, a six metre transfer to the next station, a short set, then a strike from around sixteen metres into the goal. Start the second ball once the first has reached the transfer, and the third once the second does. Everybody moves up one role as the balls run, so each player does each job.
Patterned drills have an obvious weakness: players end up specialising. Whoever starts as the finisher does thirty finishes, whoever starts as the setter does thirty sets, and after twenty minutes the group has practised a pattern rather than the individual actions inside it.
Running three balls with the roles rotating fixes that without changing the setup. Each sequence moves everybody up one position, so across three balls a player has played the one-two, made the transfer, delivered the set, and taken the strike. The pattern is identical every time; only the person doing each job changes.
The technical value is that these four actions are genuinely different. The one-two return is cushioned and first time. The six metre transfer is struck and changes the angle of the attack. The set is under two metres and has to arrive on the correct foot. The strike is from sixteen. A player who only ever does one of them can look accomplished and still be missing three quarters of the sequence.
The practical difficulty is spacing the balls. Started too close together, two sequences arrive at the diamond at once and both collapse, and the group's instinct is then to slow everything down. The right answer is to start the second ball when the first reaches the transfer, which keeps the tempo high and the sequences separate. Getting that timing right is most of the coaching in the first few minutes.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.