My lodge and every lodge room I've been in in Massachusetts has a "tyled" and "untyled" door. The Tyler sits at the tyled door. The Candidates and anyone who arrives late to a meeting come in through the untyled door. The Tyler and Junior Deacon have knocks during the opening and closing of the lodge at the tyled door. The Candidates and Senior Deacon have knocks during each degree at the untyled door. We therefore have knockers on each side of both sets of doors.