Idea Summary
An item of type “select list” should be able to fill other items via “Additional Outputs” from the LOV. Similar to a popup-lov item. This should work for form fields but also interactiv grid columns.

Use Case
The end user usually wants to see more information that is connected with a certain lookup. So when the lookup value is changed, then a form field needs to be populated using that additional information. 

Typical example: long descriptions/explanations of the selected value.

This information needs to be seen after the selection. Often it is not needed during the selection, so a popup-lov looks visually to complex.

Preferred Solution (Optional)
Copy and past the logic already there for popup lovs.