Grouped Products is a nice feature for WooCommerce through which certain products are grouped together and show on the parent product holder. On front side, a grouped product interface will look like:
On this example the Physically Product is the group parent holder, while other are child products of the group.
Using the Advanced post Types Order plugin you can create customized sort of the inner grouped products through a simple drag and drop interface.
Through the same re-order interface, products can be moved out of a group, by drag and drop the product out of nested hierarchy, to another group or to root.