you could use creation date (Erstellungsdatum) for this. Further you can select the folder where the search should be applied (Datenbank searchs within all databases)
Not in the English forum. Nor right now, since I’m traveling and don’t have a Mac with me.
There might be a button to the right of the search field that you can use to open the dialog. Or have a look in the documentation, it might be described there.