“Install Competition” sets multiple Adjustments, one of which is “Competition Mode”. Competition Mode will remove any use of randomness in the game logic. For example, serializing the “Stroke of Luck” style awards to be in the same order for all players.
Holding in the Left Flipper Button to enable “Player Competition Mode” will activate the “Competition Mode” setting for the next game. This does not alter any of the other Adjustments which “Install Competition” would set.