I am trying to get Structure from Field list (like shown on the second example below) on Get Metadata (shown below), but I am not sure on what condition Structure would be shown from the Field list.
So, I am trying to get Structure from the first example (second example is fine).
I was watching this YouTube from "All About BI!", but it does not show how Structure was displayed.
https://youtu.be/LKjewkeNiJ0?t=122
On the time stamp of 2:02 (of this video), it displays Structure, but it does not explain how it was shown.
First example:

Second example:

Can someone explain on what condition "Structure" could be displayed under Field list please? Thank you!