OK. We've indicated the Depth File and given our soon-to-be stereogram a name. Here are three more painless steps.

Select the radio button at the bottom of the menu Colorfield Stereogram.

By default PopOut produces a RDS (random dot stereogram).

Press the third button: Colorfield File... and select the file named panel.tga Press OK

Now here comes the hard part... Press Generate.

In a matter of seconds, PopOut, bless its little heart, processes all the information, creates the repeating panels and hides the image. All in less time than it takes to say, Bob's Your Uncle!