How can I set PhpStorm file structure view to show inherited members by default

How can I set PhpStorm file structure view to show inherited members by default (or change key binding from Ctrl+F12 to show)?

The question pretty much says it all. I configured file structure to show up with Ctrl+Alt+S, but cannot change the default setting for show inherited and can't change the keys either.

Is there a file, where default non editable configurations are in? For example there is an xml file under PHPStormRoot\config\keymaps
What would the action be for that?
Is there a plugin for more configurations?
Should I consider writing a plugin myself (would I be able to change such things)?

Solution

I found that if you remove the other configurations(ctrl+F12) for opening file structure, show inherited members becomes your keybinding(ctrl+alt+S).

However it can be buggy, won't open until you re open the IDE.

Also you will be delighted to know that if the method you are looking for doesn't exist it will automatically search from inherited members too.

I also removed f12 from my keymap at PHPStormRoot\config\keymaps\$YOURCONFIGFILE.xml

EDIT: Show extra info