Section

Used in the website theme pages to specify where publishers will be dropping editable regions.

Typically publishers will rarely use this widget since it is only used in the theme pages of the website and nowhere else.

How do I add this widget to a page?

Click Edit Page
Click either + Content or the Settings icon (down-facing arrow) which will be located to the right of Edit where you will need to select either Insert above or Insert below
Choose the Section widget
Select the Block Type by default it will be Basic Div. Other options available are Fixed Width and Full Width.
When you are finished, click on the green Create button and your Section widget will show up on the page.
Make sure to click either the Publish or the Save Draft option just as you would when you're editing pages.

Note: Section widgets should not be used within another container, row or column. We suggest adding the row widget to a Block widget once placed. Click Container to add a custom class to your Div or Section.