You can set each meeting to any duration, and introduce breaks between sessions or even individual meetings.

Important: If your meetings run across more than one day, every meeting slot you set up will appear on each day. You can block (prevent meetings) on any meeting slot on any day, and you can set up overlapping meeting slots that are blocked on the days they will not be used. However, every meeting slot will be displayed on each delegate's online schedule. To avoid confusion it is better to align meeting times across each day of your event, blocking those that clash with other key activities.