Here are links to 3 basic greenhouse sizes. Even if none exactly matches your model, it will give you an good idea of where to use each connector & pole lengths. You can print the set that is closest to your model. (I store my instructions in a zip lock bag with my greenhouse kit, so the dampness in my garage doesn't cause them to deteriorate.). Blessings!
https://www.manualscat.com/en/gardenline-4-tier-greenhouse-46763-manual
https://www.biglots.com/images/pdf/810131127.pdf
https://www.holmanindustries.com.au/wp-content/themes/holmanindustries/Manuals/GH1001%20Manual%20Web.pdf
Penny
September 2023