It shall be the duty of the secretary to give notice of each annual, budget, and special meeting. The notice shall be hand-delivered or sent prepaid by first-class United States mail to the mailing address of each Unit or to any other mailing address designated in writing by the Unit Owner to each member of the Association and to each Eligible Mortgagee, if required by Article 27 of the Declaration.The notice of any meeting shall state the time and place of the meeting and the items on the agenda to be voted on by the members, including the general nature of any proposed amendment to the Declaration or Bylaws, changes in the previously approved budget that result in a change in Assessment obligations, and any proposal to remove a director or officer. Before any meeting of the Association, any member may, in writing, waive notice of such meeting. Attendance by a member at a meeting of the Association shall be a waiver by him of timely and adequate notice unless he expressly challenges the notice when the meeting begins. [Bylaws, Article 2, Section 2.5]