adding multiple photos -- Can't be this hard! What am I missing?

In Section 1 I first have to add a slot, then select the pic for it. Only then can I add a slot #2, add the pic for it. And so on, etc. etc. This is clumsy and tedious enough. But afaics the job isn't done. If I don't go into Section 4 and click on payment for additional photos, they are not saved in the Default. And the procedure is just as in Section 1. One photo at a time! Compound tedium. That can't be right!? I tried going to Section 4 first, but seems I need both to get it saved. What am I missing?

To add multiple photos in your listings :

In the photo section of the listing : Click on the blue CHOOSE PHOTOS

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This will bring up this form

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Then "drag" your photo to this new form.
When done, click on START UPLOAD

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You will get a listing of pictures and choose which pictures you want for the listing
Then click USE SELECTED PHOTOS

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If you want to select several product pictures, you can do this and then they have been uploaded.
I only use the pictures per listing. I made a big mess when I loaded all the items for one category and had to scroll through the pictures to select for each listing.