How do I add, remove, or reorder a section that was not part of the original agenda?

Open the agenda you want to add the section to.

Below the agenda title, there is a link labelled 'Edit Sections'. Click this link. From this page, you will be able to add, remove, and reorder the sections for your agenda.

You don't need to repeat this for every meeting, these changes will carry forward to your next agenda!