Florida Rule of Criminal Procedure 3.361
(a) Subpoenas generally. Subpoenas for testimony before
the court and subpoenas for production of tangible evidence before
the court may be issued by the clerk of the court or by any attorney
of record in an action.
(b) Subpoena for testimony or production of tangible
evidence.
(1) A subpoena for testimony or production of tangible
evidence before the court shall state the name of the court and the
title of the action and shall command each person to whom it is
directed to attend and give testimony or produce the evidence at a
time and place specified in the subpoena.
(2) On oral request of an attorney, the clerk shall issue
a subpoena for testimony before the court or a subpoena for the
production of tangible evidence before the court, signed and sealed
but otherwise in blank, and the subpoena shall be filled in by the
attorney before service.
(c) For production of tangible evidence.
(1) If a subpoena commands a person or entity to
produce books, papers, documents, or tangible things, the person
or entity may move the court to quash or modify the subpoena
before the time specified in the subpoena for compliance.
(2) The court may (A) quash or modify the subpoena if
it is unreasonable and oppressive, or (B) require the person in
whose behalf the subpoena is issued to advance the reasonable cost
of producing the books, papers, documents, or tangible things.
(d) Attendance and enforcement. A witness subpoenaed
for testimony before the court or for production of tangible evidence
before the court shall appear and remain in attendance until
excused by the court or by all parties. A witness who refuses to
obey a subpoena or who departs without being excused properly
may be held in contempt.
X. CONDUCT OF TRIAL; JURY INSTRUCTIONS