Keep multiple entries as one ''product''

Hello!

I have a question, in order to filter my repeating group the right way, we’ve came up with this database:


It’s all one ‘‘product’’ that has to be kept together. Because when a client wants to delete the item for instance or adjust it, there is no way to load it all in the same time.

How do i keep the multiple unique id’s together in a upper data type for instance?

Thanks!