Continuing a meeting

[Guest Trish S.]

Do the members pick up where they left off when opening a continued meeting, or does the chair need to take roll, establish a quorum and then continue with the meeting?

[Gary Novosielski]

If you're referring to an Adjourned Meeting, you continue the order of business where you left off, but it is still necessary to establish a quorum.  

RONR does not require a roll call, but if your rules require one, follow the rule.  (Typically it would be the Secretary who calls the roll, not the chair.)