Chart of Group in BasicUI: show/hide single channels/items?

Hi, I am using OH 4.3, latest snapshot.
Is there a possibility to dynamically show/hide single channels/items of a group chart in BasicUI (sitemap) via mouseclick?
I think I read about this some time ago, but do not remember how this could be done.

This feature does not yet exist.
In a chart, you can show either an item or a group with all its items.

Okay, so I remember wrong.
Thanks anyways!