Using this Shure SM58 wireless microphone capsule is easy. First, connect it properly to your wireless system. Make sure the connection is stable to avoid audio interruptions. When using it, hold the microphone at a proper distance from your mouth for the best sound quality. As for the dented grille, it doesn't affect the basic function but try not to press it further to prevent more damage. For maintenance, keep it in a dry and clean place. Regularly check the connection parts and clean the microphone gently with a soft cloth to ensure long - term use.