D.C. Mun. Regs. tit. 23, § 2005
2005.1 Either the licensee under a Caterer's license or a designated manager shall remain on the premises during the hours that alcoholic beverages are sold, served, or consumed at the event.
2005.2 The licensee under a Caterer's license shall place a copy of the license in the possession of a designated manager for the duration of the catered event and the manager shall make the license available for public inspection upon request.
SOURCE: Section 303 of the Omnibus Alcoholic Beverage Amendment Act of 2004, effective September 30, 2004 (51 DCR 6525 (July 2, 2004)); as amended by Final Rulemaking published at 55 DCR 12991 (December 26, 2008 – Part 2).