Search by category dropdown alone?

Hi there

Great plugin, really simple to set up. Thanks.

When I search with a term entered in the search box the results show up fine. However, if I leave the Search box empty and just select a category then the search returns no results.

Is it possible to have it just select a category from the dropdown and then show all results within that category?

Link here

Thanks
Dom

https://ww.wp.xz.cn/plugins/ab-categories-search-widget/