(a) The time or place of a meeting may be changed following the public announcement described in § 10002.4. The Council must publicly announce such change at the earliest practicable time.

(b) The subject matter of a meeting or the determination of the Council to open or close a meeting, or a portion thereof, to the public may be changed following public announcement only if:

(1) A majority of all members determine by recorded vote that Council business so requires and that no earlier announcement of the change was possible; and

(2) The Council publicly announces such change and the vote of each member thereon at the earliest practicable time.