Editor: Control of the Insert pull-down menu

We need the ability to edit the bottom half of the Insert pull down menu in the Confluence Editor (I know the top half cannot be changed). I did find this guide:

https://developer.atlassian.com/display/CONFDEV/Adding+an+Option+to+the+Editor+Insert+Menu

But this only covers new or custom plugins and we need the ability to add an already included Macro. Specifically the Atlassian HTML macro (see attached). How do I get that Atlassian HTML Macro on the pull down menu for the Insert function within the Editor?

As you can imagine, that HTML macro will be frequently used by our company and it will save us time and effort to get it on the pull-down list.

Thanks!
-Ryan