A few pointers to easy planting for you and your plants!
First lay your completed sandwich flat on the ground. I’ve used some weedstop fabric to avoid seeing the bag through the holes before the plants get larger.
Then cut a “V” shape in the bag with the bottom of the V away from the hangers. You can use an X but I have found a V works best so far.
Take your plug plant and try to very gently loosen off surplus soil, without damaging the roots. You may need to scoop out a little soil to make space.
Try to position the plant so that it will be standing up once you hang the sandwich on the frame. Use some spare soil to backfill and make sure it is secure.
Water when you have finished palnting and while still flat and then again when you’ve hung the sandwich onto the frame.