Hi @scorpio,
try this and check the tab “New Choice”
Was this what you wanted to achieve?
If it was, copy it and look in the data editor.
I created a detail table that serves as a basis for the choices, then see how I built the relation based on a compound key obtained thanks to the template column.
This example was just to explain the method of retrieving a data through a relation based on a compound key. Note that in the Detail screen table I added, the columns containing the choices, in a typical usage scenario, should be user specific.