Order to appear.
a. If there is probable cause to believe that a material witness order may issue against the person named in the application, the judge may order the person to appear at a hearing to determine whether the person should be adjudged a material witness.
b. The order and a copy of the application shall be served personally upon the alleged material witness at least 48 hours before the hearing, unless the judge adjusts the time period for good cause, and shall advise the person of:
(1) the time and place of the hearing; and
(2) the right to be represented by an attorney and to have an attorney appointed if the person cannot afford one.