If you have PVC panels in the bottom of your porch start with them place two packers one each side of the panel place the panel on top and then add the shortest beads first and squeeze in the longer lengths last. Use a nylon hamer to tap the beads into place. Then proceed with the glass units do the bigger panels first and the smaller panels last.

Get the beads in top and bottom then bend the middle section in last to stop the corners popping out give them a few taps to fix them in there window track.