This may be accessed as Meeting History (from Manage Meetings on the dashboard) or Full History (from the Meetings button at the top of the screen). Either way, the window is the same.

"Meeting History" is a slight misnomer, as it includes future meetings as well as past ones. Past meetings have a "Reconciled" column, so that you can see if you still need to reconcile any meetings.

Use the "Open" button to view the agenda with Signup and Release buttons, or "Manage agenda" to go straight into Edit mode.