Is the PSE12 Organizer event tab really that clueless?

Question

In PSE12 how does one display the icons under the event tab in a categorized tree structure?
In my PSE10 catalog, I have a highly structured event tag tree for 30,000 pictures and videos covering 15 years.  This tree has annual main categories and then numerous events in 2nd level subcategories under each year.  Below that are tags for which camera/person took the picture as well as other tags for videos, panorama-segments etc.  Altogether there are probably several hundred or more subcategories.   After importing the catalog into PSE 12 all of these subcategories show up in the top level display causing massive duplication that scrolls for 12 or more screens.
The PSE12 event tab is useless if it can only display every subcategory all at once in a flattened format.  I also do not see any way to move these subcategories out of the events tag area and into the keyword tag area to help eliminate clutter.  Please help me not hate PSE12 so I can migrate off 10.

Answer 1

Thanks very much for the reply and yes I was aware of that on the media tab but it no longer gives you the easy right click options that the previous versions had, like for example quickly excluding a subcategory tag of a certain main category of tags.  Shouldn't the events tab allow a hierarchical view so one could drill down to the desired event subcategory?  I don't understand why you can create groups under the events tag header but then not be able to display those groups under one icon on the events tab.  Otherwise the new events tab just seems very cluttered, cumbersome to use and extremely limiting in purpose.