(A) Council shall determine its own rules and keep a journal of its proceedings. It may punish or expel any member for disorderly conduct in council or a violation of its rules, and declare his seat vacant for absence without valid excuse where such absence has continued for 2 months. No expulsion shall take place without the concurrence of 2/3 of all the members elected, and until the delinquent member has been notified of the charge against him and has had an opportunity to be heard.
(B) When some member of council may be unable to attend meetings, by reason of illness, vacations, absence from the city, or for other reasons, and if the absent member is absent for just cause, a motion should be passed and entered on the minutes, excusing such member. The seat of a member will be declared vacant after 2 absences without cause.
(`59 Code, § 111.05)