FG/PAT Mechanics

[The Roamin' Umpire]

There are two main situations: short kicks (defined as the ball being snapped inside the 15), and long kicks (everything else).

Short kicks
With fewer than four officials, the R has the kick through and through - everyone else stays home, and HL specifically has kicker/holder.

With four officials, the LJ moves to the endline. He rules on over/under only. R takes the kick, and HL still has kicker/holder. (I believe moving the LJ is nearly always unnecessary. In my opinion, it makes sense for tries, since a blocked kick is dead. For a FG, though, when the play can be live, I'd rather have the LJ at home to cover busted plays. But that's not the mechanic.

With 5+ officials, you have two men under the goalposts. They have the kick, and the R has the kicker/holder.

Long kicks
The rule here is: someone needs to be at the goalposts. With four or fewer, put one official there - he has the entire ruling on the kick. R has kicker/holder, and everyone else does their normal job. (Plus, of course, covering for the "missing" official.)

5+ officials is the same as short kicks - two men under the posts.