Quote Originally Posted by whiskeybravo View Post
I believe you can activate them by holding Ctrl or Alt and the designated # key. I use them to keep track of stuff, not for activating - so I'm not 100% if it works that way.
ok yes! This was the response I was looking for. To the other responses, I tried to say in my OP that I know how to activate the extra R2 L2 buttons. I was trying to see if there's a way to use extra vertical or horizontal crossbars on the HUD using a keyboard.