Returnable packaging material sales scenario

Hi ,

PLs guide how to map following scenarion-

when we have an standard order where we ship goods to a customer and those goods are packed into one of those returnable packaging boxes, how can we make it possible that sales material is category TAN and packaging to category LAN?

Is there a table where we can define standard qtyu2019s. E.g. 20pcs. of finished sales material = 1 Packing material so when I sell 100pcs. finished sales material automatically 5 Packing material s are booked as well

Points will surely be rewarded.

Regards