In Slow-Pitch I call time as soon as a infielder has the ball and all runners are at a base or within 3 ft of one. In FP I never call time unless requested by a player or coach. Also I have no problem calling time as long as I have the play in front of me. Calling time when the play is in back of you can make for a long game with the complaining from the teams for killing their opportunity to throw the ball in to a DB area.
