To add a new object, just simply provide an extra UIBarButtonItem control in your user interface, then wire it up to the SCArrayOfObjectsSection using the addButtonItem property.
I understand that you may already have another add button on your navigation bar for adding items in another section, and it might be a problem to find somewhere in the UI to add an extra button. That's why, in our next release, we're planning to add a new feature that automatically provides an extra cell in the section that adds new items when tapped. The new release is due in roughly 10 days from now. If this is urgent, we can send you a beta in the next few days.