What is the most logical next event?

How to remove a sliding screen door
Remove any curtains or other decorations.
Any decorative items you may have on the door, such as curtains, will only get in the way of your job. Removing them before you start working will save you from hassle later on.

Options are:
(I). Locate the screws at the bottom of the door. Most sliding screen doors have screws located at the bottom corners.
(II). Getting rid of things in the door makes it easier to shut it. You don't have to remove all your furniture or anything from the front window or even the side of the house when you are working inside.
(III). Lower the bottom panel panel to uncover the panel on the top. Most sliding sliding door screens come with straps that you can slide directly back onto the top panel.
(IV). If you live in a place that has a lot of clutter, such as a home business office or garage, you may not be able to remove everything at once. Holding large or random items still in your hands can save yourself time as you don't have to juggle everything with your hands at all.
(I).