The forecaddie's job is to keep the group moving by keeping track of all balls in play and letting each player in the group know where his or her ball is.
For example, one player in the group hits his ball into high rough. The forecaddie will hurry ahead to search for the ball, and point it out to the player so that play continues without delay.
If the forecaddie ever becomes involved more directly in the action (say, is struck by a ball), he is considered under the rules an "outside agency."

