If you click the "New Migration" button on the toolbar, it is going to open "Migration Wizard".
However, the user can't know where is able to use "Import CSV file" menu on the toolbar.
Of course, there is also a small button for this usage on the right side.
But, no one can click this button because of very small.
So, we need to change that it shows only sub menu items if you click the menu of the toolbar.
You can refer the toolbar of CM/CQB. There have been supported this way.