(1) A citation to propound a will in Form P27 may be issued at the request of a person having an interest contrary to that will.
(2) The citation shall be directed to and served on the executors named in the will and to all persons interested under the will.
(3) A person served with a citation shall file an acknowledgment of service in Form P22 and shall serve a copy of such acknowledgment on the citor.
(4) The time for filing and serving an acknowledgment of service is fourteen days from service of the citation.