Event Listeners

Hello, I’m making a new game that has a menu in the bottom-left corner of the screen that could be open or closed at any time during the game. When the menu is open, there are 4 different options the player can choose from, each with a different listener. I was just wondering, would it make more sense if I added the four listeners when the menu is opened and then remove them when it’s closed, or just add them at the beginning of the game and leave them as is? When the menu is closed there is no need for the listeners so I was just wondering maybe the former idea might be better.