This will depend on whether the turntable in question is manual or automatic. In the case of the latter, stopping a vinyl record from playing can be as simple as pressing stop on the cueing system; alternatively, you can press the cue button to lift up the tonearm from the record without losing where you were, in the case that you intend to return to listening to the record afterward. In the case of a manual turntable, there will be no such cueing system, meaning that you will have to lift the tonearm from the record with your own hands, a delicate process that has frequently led to the defacement of records by less experienced fingers.