Locating/editing the dashboard drop down menu

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Hello, I have recently discovered C5 and I am having a lot of fun playing around with the guts of it all.

I am struggling to modify the drop down menu that appears when you over over the "Dashboard" tab...

I was able to locate and modify the main dashboard here:

"concrete/single_pages/dashboard/view.php"

I was hoping the drop down might also refer to this, but it did not.

I thought I had it when I found the following:

"concrete/helpers/concrete/dashboard.php"

But editing this seemed to do nothing at all... However, removing the file completely caused quite a few errors.

I seem to have looked everywhere.. Its probably staring me right in the face. Any ideas?