Ushers are primarily responsible to escort guests to their seats at weddings. Often, especially at small- to medium-sized weddings, some groomsmen perform the ushers' duties. At times there is a complete overlap, with all ushering handled by the groomsmen. At larger weddings, however, ushers are separately designated and do not stand up with the groom during the ceremony itself.
Typically, an usher at a wedding greets guests as they step into the church sanctuary or other room where a wedding is taking place. They distribute programs or bulletins, then escort parties of guests to their seats on either the bride's or groom's side of the church, usually offering an arm to escort the oldest woman in each party of guests. Traditionally ushers have been men, but in some more informal weddings, women also serve as ushers. The rule is to have one usher on hand for every 50 guests; if groomsmen are handling ushering duties, they are included in that calculation. Ushers are sometimes assigned other task by the groom, including laying out any aisle runner, helping keep ring bearers and flower girls in line and keeping divorced family members separate from one another. Traditionally an usher wears the same outfit as the groomsmen, but often has a slightly different boutonnière.