How to never show aggregates in Matrix visual?

[etaks90]

How can I avoid showing aggregates in a matrix visual? In below screenshot I would like to have an empty row for the rows with a "+" in the beginning, in this case "Tür" and "Übersicht".

[Padycosmos]

Hope this helps:

[etaks90]

This has no effetc. It only removes the aggregate from the open layers (e.g. "Kolben"), not the collapsed one (e.g. "Übersicht").