Location: The edit screen within each Element. At first glance, the Nested Columns Element does not have any Element Options. This is because they are in the individual columns of the Nested Columns Element, rather than the parent element itself.
You can deploy as many individual Elements in pages and posts as you need, there is no limit. Within each of the Elements, you will see a tab or tabs that house an array of options that make it possible for you to configure each Element independently, and greatly enhance your flexibility and creative options.