Does Quantity Manager work with grouped/bundled/composite products?
WooCommerce Quantity Manager works nicely with grouped products. Add quantity rules globally, to the category, or to the individual products or variations that are in the group. Don't add the rules to the grouped product itself.
Unfortunately it's not currently possible to add quantity rules to products that you create using the Bundled Products or Composite Products extensions. If you add quantity rules to products that are within a bundle or composite product then they will be ignored. We are tracking the amount of demand to integrate WooCommerce Quantity Manager with these plugins, so please send us a feature request if you would like this.