No umpire should spend any more than 3 minutes in one zone at a time (look for switches at BTIs; kick ins; field ball ups; any other undue delay; even double switches after goals)
At each MZ BTI and field ball up there must be an adjacent zone umpire on that side of the ground as a support
BTIs and field ball ups close to the arc (just inside or outside) are always the responsibility of the MZ umpire
The EZ umpire acts as a support for the MZ umpire when defenders have a mark or free kick close to the arc (allows the MZ umpire to back out)
MZ umpires need to back off at 45 degrees unless the kick will obviously result in a change of control
MZ umpires need to keep the play to about 40 metres from goal
EZ umpires must relinquish control when the ball comes out of the arc
At centre ball ups the position of the EZ umpires should be close to the edge of the centre square (maybe even just inside to be more effective, if needed due to match conditions)
When an out of zone free kick is paid, the umpire who pays it should take “ownership” of the free kick
Advantage cannot be called when an out of zone free kick is paid
As EZ umpire your position should be constantly changing (you may leave the arc when you’re not in control)
When the MZ umpire has a ball up just inside the arc the opposite EZ umpire should be just inside the centre square
At field ball ups back out towards the major axis
For MZ BTIs, position yourself on the long side
At kick ins, EZ and MZ umpires’ positions are the same as the two umpire system. The opposite EZ umpire will be just inside the centre square