To work around this I set my Forecast/quick tag to one called “Focus”. I put that tag at the top of my tag list. I create a custom perspective for actions with tag = Focus, group by tag. I keep the top tag group open (Focus) and collapse everything else. The result is a today-style perspective I can re-order.
Wow, my bad - messed up with the sorting as well and didn’t understand why flagged can’t go in as well.
Tagged now all flagged with Focus Tag und excluded the flagged ones and got the Perspective right now - Thank you very, very much!