Hey there @steveindzine,
Thanks for reaching out!
Currently, it is only possible to define product dependencies for a single product — not for multiple units of the same product.
I have added your feedback to our internal log but please keep in mind that we have no plans at the moment to expand the functionality offered by the Product Dependencies plugin.
If this is urgent for you, then we recommend considering implementing a custom coded solution. For WordPress/WooCommerce customizations, we highly recommend https://codeable.io/.
Cheers,
Jason Kytros
Support Engineer
SomewhereWarm SMPC
https://somewherewarm.gr/