You can add WordPress menus to admin bar using this plugin.
First you should create WordPress menus through Appearence –> menus
Next go to Settings –> WPAIO Adminbar page –> WP Menus tab
All WordPress menus you created are displayed in this area.
You can select WP menus and display location as Admin bar.
Note: You should put a suitable label for each menu in Custom Root Lable text field in order to display them in the admin/toolbar.
Example :
You have created menu1, menu2, menu3. You can add these all or selected menus to admin bar.
According to your text “can I use it to add new menu locations to the WordPress toolbar” what do you mean by this?
If I didn’t understand your requirement, feel free to send me an image, hand drawing sketch, comprehensive document or whatever to [email protected].
I tested only this feature with WP 4.0 while ago (I didn’t have time to check the whole plugin features). It is working to me. Currently I’m working with few individual projects in parallel.
That’s why I said need time to update the plugin. But if you are still in trouble, send me the admin details of your site to above mentioned email address.
I would like to help you with my time.
Thanks.