The phrase designates an individual who acts as a temporary presiding officer in the absence of the mayor. This individual, typically a member of the city council or similar governing body, assumes the mayoral duties and responsibilities for a specified period, such as a meeting or until the mayor returns. As an example, during a city council meeting where the mayor is unavailable, the designated person will lead the proceedings, recognize speakers, and manage the agenda.
This role ensures continuity of leadership and prevents disruption of municipal business. It provides a system of succession, allowing governance to proceed smoothly even when the elected executive is unable to fulfill their duties. Historically, the practice reflects a commitment to stable administration and the avoidance of power vacuums in local government.