How to add a new button to Run toolbar/move the item from ⋮ to the main group

Question

I have an item (such as "Export test results") hidden under ⋮ menu. How do I move it outside so I can run the action with a single click?

Answer

1. Right-click the toolbar header and click "Customize toolbar"
2. Click "Add" button
3. Type the action name and click "OK"

Result:

The action added