Detalied table/Nested table

Need to create a detailed table in Connect Desinger with order lines coming from different records. Each record has a headline and x numbers of extra lines below.

Anyone have any examples of how to make a nested table in designer ?

Tried this link, but I can’t see how the examples are working – can’t open them.
https://learn.objectiflune.com/de/planetpress-connect/howto/cloning-your-way-through-nested-tables

The datamapper looks like the picture I have attached.

Attached are the examples in the link above. You need to open them with the latest version of Connect:

DynamicNestedTablesUsingClone.OL-datamapper

DynamicNestedTablesUsingClone.OL-template