This seemed a little awkward to me so I am writing it down so I can get it done quicker next time. You need to change to the Virtual Media tab and fill in the blanks.
What is important to know, is that you need to start with a \ and end with an .iso. When you get no errors with the Save button, you can use the Mount button.
Once you use the Mount button you will see that Device 1 has an iso mounted. As we see above. You can use the Unmount button when you are done.
Hope this helps,
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