Excel Macro Trigger creates Subset

I have a great outline interview Worksheet that EE Pro Martin Liss helped build.  This is a very solid WS that should help people who do interviews.   Right now, if you click the Outline button, it discloses different outline levels.  If you click the black Boxes in Col. C, you will get a cycle for a check, a question mark or an X.  Here is what I'm trying to do;

I would like to see, when you double click the black box, and the box shows a "Check" or "P" with Wingding2, it auto expands by one level.  If you click another box and there is a 3rd level, it will expand to the 3rd level. Click if so it doesn't show a Check (or "P") and it will contract back to the appropriate level.

Keep in mind, this list of questions/text will be at least in the neighborhood of 200+ rows when it is expanded.  You can use Column A as a designator since it equates to a specific "level."

Thank you in advance,

B.
Outline-Dropdown-Trigger.xlsm