Sec. 307. Special meetings of a plan commission may be called by the president or by two (2) members of the commission upon written request to the secretary. The secretary shall send to all members, at least three (3) days before the special meeting, a written notice fixing the time and place of the meeting. Written notice of a special meeting is not required if:
(1) the date, time, and place of a special meeting are fixed in a regular meeting; and
(2) all members of the commission are present at that regular meeting.