(a) A subpoena must be substantially in the following form:
“In the name of the Government of the Virgin Islands:
“To: John Doe
“You are hereby commanded to appear before Richard Roe, the Attorney General of the Virgin Islands (or the United States Attorney for the District of the Virgin Islands, as the case may be) at (naming the place), on (stating the day and hour) to give testimony in connection with the investigation by the Government of the Virgin Islands with the investigation of a charge against John Smith.
“Dated this ____ day of ____, 19 ____.
“Richard Roe
“Attorney General (or United States Attorney as the case may be).”
(b) If chattels, books, papers or documents be required, a direction to the following effect must be contained in the subpoena: