Create a metafield to link products with the metaobject
This is a one-time step to link your products with the metaobject created earlier (easy).
Video:
In the product admin choose settings -> custom data -> metafields -> products
Use the add definition button
For the name, call it something like "link to products". The same can be used under the description
Choose select type, choose metaobject (filter or scroll towards the bottom to find)
Under reference, use the dropdown and choose siblings (name of metaobject)
Press save to complete.
