but what if two people carried the ball at the same time?
Ever seen the QB ride the option with the RB? Brief but it happens.
2-24-ART. 3 . . . A legal free kick is any legal kick which puts the ball in play to start a free-kick down. After the ready-for-play signal and before the kick, each player other than
the kicker and holder for a place kick must be behind his free-kick line. A free kick is used for a kickoff, for a kick following a safety, and is used if a free kick is chosen following a fair catch or awarded fair catch.
Singular tense
2-24-ART. 8 . . . A punt is a legal kick by
a player who drops the ball and kicks it before it has touched the ground. A punt may be used for a free kick following a safety or for a scrimmage kick.
One
2-24-ART. 6 . . . A drop kick is a legal kick by
a player who drops the ball and kicks it when it touches the ground or as it is rising from the ground.
Again one
2-32-ART. 8 . . . A kicker is any player who legally punts, drop kicks or place kicks. A player becomes a kicker when his knee, lower leg or foot makes contact with the ball.
2-32-ART. 11 . . . A passer is a player who throws a legal forward pass.
As they say Read Rule 2