Product Advanced
From Shopnix Help
Where I can access the Advanced feature?
Advanced i.e. 
button.This is generally used for if you want a BUY NOW button for the product to put on your website, email, Facebook pages, so you can paste the code in where you want to show the BUY NOW button and the customer will be directly taken to the store by clicking it.
If you have more queries or would like assistance with this please contact us on support@shopnix.in.