What is the rule for marking ball off the green?

When marking a ball off the green in Golf, the player must use a coin or a similar object to mark the spot where the ball lies. The ball should be lifted carefully without causing any damage to the surrounding area. After marking, the player can clean the ball before replacing it on the original spot, ensuring it is correctly aligned for the next shot. It's important to avoid moving or disturbing other players' balls while doing this.