How can I track Featured Snippets?

Featured snippets are automatically tracked by PRT. 

If the URL you are tracking appears in a featured snippet, it will have a different icon under the "Type" column (a star appears on the organic, organic local or mobile icon).

system note will also be added to the term (visible on daily breakdown and notes report) when a feature snippet is tracked for the first time and when a featured snippet rank is dropped, and the term rank becomes a regular organic rank.

"Term Combination" column, will show "Featured" for a featured snippet.
Featured Snippet - type icon
What is a Featured Snippet?