Other. Player describes actions. If I am unclear on what's happening, I ask questions, specially focused on player intent. Only when it is clear that a player's intent requires a roll should a roll occur. Once it has occurred, Let It Ride: a result holds true until there is a significant change in situation, not just "you moved again so you must sneak again." As soon as the roll is done, back to discussing actions and looking for intent when I'm not clear on something.
Players have a voice in whether a roll is warranted or not, but in 99%+ of cases it should be obvious that something requires rolling. We communicate and build a serious, real consensus and then move on with our game.