Grip of the ball is a key element of the game, it is used throughout, when carrying the ball, playing the ball, offloading and scoring tries. The link will take you to activity cards designed by the RFL with some super League examples of grip, while scoring, and offloading in a game.
These skills are well practised and Super League players will spend time practicing this on a regular basis… Here is Lee Mitchell with some examples of practices you can use, with some tips and advice on practicing the skill.