You can add one or several sub-entries to each record entry. These sub-entries are subordinate to the record entries and can always be collapsed and expanded, which means they are not visible at first glance.
You can recognize an entry with a sub-entry by the fact that the number of sub-entries is displayed on the right Sub-entries are collapsed by default, but when you click on the number, the sub-entry / sub-entries are expanded and become visible.
This is how it looks in the records
