Hello,

Thank you very much for choosing our theme and for contacting us.

An affiliate product is a Woocommerce type of product, please find the manual here: https://woocommerce.com/videos/woocommerce-external-affiliate-product-overview/

You can create menu of your categories in Appearance > Menu and assign it in the Category element of the Header Builder https://xtemos.com/docs/woodmart/header-builder/add-edit-builder-elements/

Manual on mega menu blocks may be also useful: https://xtemos.com/docs/woodmart/create-menu-2/

Best Regards

Best Regards