The best way to search for Graphic Novels within the Zeta Collection is through the library's discovery tool, OneSearch.
You can enter a title, author, keyword, etc. in the basic search box or you can click on "more search options" to narrow your search more easily.
Then, you'll see the search page. Click the first dropdown menu to search by "subject" and then choose "is (exact)." In the search box, enter "graphic novels."
From the results page you have the option to limit your results to the Zeta Collection by selecting "location" and then "Zeta Children and Young Adult Collection."