How can I upload an image that's a file on my computer?

Instead of linking to a "source", how do I upload an image already on my computer?  It doesn't give me an option to upload as far as I can see.

Thanks you!

Hi, thank you for contacting us.

To upload a picture from your computer, you may use the "Image" field.

I created an animation to guide you through:

If you need further assistance please let us know. We will be happy to help. Thank you.