A: The President can initiate the adjournment of the meeting under two common conditions:

• When the time has been reached that has been set in the agenda or by vote. For example, if the agenda says, "11:00 A.M. - Adjourn." In this case, the chair simply says something like, "We've arrived at the scheduled time for adjournment. This meeting stands adjourned." The chair should not interrupt a speaker, but should make the announcement when no one else has the floor. Exception: the chair should interrupt any speaker if the time to adjourn was adopted as a special order. See RONR p. 184.
• When the meeting has exhausted its agenda, the chair can ask, "Is there any further business?" If there's no answer, he continues, "Since there is no further business, the meeting stands adjourned." See RONR p. 240.