"Info" Option in Group mode allows the user to add and delete the lights in already existing Group. For e.g. You have created a group of 5 lights to control your Kitchen lights but later on you decided to delete one of the light from the group so rather than deleting the whole group you can just use "Info" feature and uncheck the light, it will blink twice to detect and that's it. You have successfully removed the light without deleting the group. Same is the case with the addition of new lights in existing group.