Custom add to cart quantity

Hello everyone,

Can someone please recommend a plugin which will allow me to configure a custom add to cart quantity on the product page? For example, some of my products are sold in packs of 10, so I will need the cart quantity to be increased/decreased in 10s.

So far, I couldn’t find any plugin that can do that. If you know of a plugin that can do that, please let me know.

Thank you!

Regards,

Helen