If the device does not support putting, here are your options for the default putting modes.
Player Putts out - Player has to hit the ball into the hole
Computer Decides - once the ball lands on the green the computer guesses how many shots it would have taken to get the ball in the hole based on distance from the pin with an amount of randomization thrown in.
Autoscore - once the ball gets within a certain distance of the pin a number is added to the player's score based on how close they are, 1 for in 5ft, 2 for in 35ft, and 3 for in 75ft.
Player Decides - once the ball lands on the green a pop up appears where the player can select how many putts they think it would have taken them to get in the hole.
Gimme - You select at what distance you want a gimme and set it.