how to use in single product page?

i want to use gallery in product page. in box_product_inc.php how to set featherlight gallery? Thanks for addon.
Add-on Featherlight Gallery works by default in product page.
i asked wrong, if possible can we use it like slider? after click on product picture can we show a next/prev button or can we change product picture without open madal?
No. Featherlight Gallery is not for this use case.
Simple slider (= carousel) is used on the LiteCart's home page by default.