Books Gallery includes a fully customizable search panel that lets visitors quickly find exactly the book they’re looking for. Filter by title, author, genre, ISBN, language, rating, and more.
As a WordPress book showcase plugin built for real use cases, the search panel is designed for both small personal libraries and large commercial catalogs.
To enable search panel first you need to go WBG Books → Search Panel Settings

From here you need to check “Display Search Panel” option.
To display a search item you need to check that item and provide the item text or default option which will be visible at front end.

Save this and you will see search panel above to your front end gallery page.

