Md. Code, Alcoholic Beverages and Cannabis § 12–1903

A license holder:

(1) may employ an individual at least 18 years old to sell, serve, deliver, or otherwise deal with alcoholic beverages; and

(2) may not employ or allow an individual under the age of 18 years to:

(i) sell, serve, or deliver alcoholic beverages; or

(ii) provide entertainment on the licensed premises.