[external] Item list - Grouping extension

External content by Daniel Krüger; March 15, 2026; 

The original post has appeared on daniels-notes.de

While item lists support grouping, you cannot configure whether these should be displayed collapsed or extended.

I created a form rule which will support this. Ok, it will collapse the rows after the initial rendering, but it will look like they were displayed as collapsed from the beginning.

In addition, you will be able to toggle the state for all groups and hide the grand total row.

You can read it up in this blog post: