Do you have to pay if you advertise a group on facebook? i'm confused?

There is a privacy setting lock...u can see when u share something on wall..just change it from der...but thats only for friends..if u dont want to show it on everyone's wall...but one thing u can do is u got a option on the right side of the post..it shows remove option..so just select it if u dont want it to display on ur wall..k..