The number of licenses for registered, retail "Marijuana Establishments,"
as defined by MGL c. 94G, § 1, may be limited or granted
at the discretion of the Selectboard, serving as the Licensing Board,
provided that the minimum number of establishments licensed shall
not be less than 20% of the number of liquor licenses presently issued
within the Town for the retail sale of alcoholic beverages not to
be drunk on the premises where sold (pursuant to MGL c. 138, § 15).