To order a transcript, it would be easier to type __school's name__ transcript in the search bar rather than searching around on the school's website. If you are a student at SJSU, just log in to your MySJSU account and look at the Academics section. There should be a button called Order Official Transcript which will lead you to a order screen. For other schools, they might have you order your transcripts through a vendor like SJSU, email, or in person.
For the request form, if you are using a vendor, when you enter NursingCAS as the recipient, it will take you to a page with all of NursingCAS's info. Find the Special Instructions for This Recipient section and copy and paste the number under the barcode of the request form. By doing this, the vendor will generate the request form to go along with the transcript. If you are ordering the transcript via email or in person, attach/give the the NursingCAS request form with your transcript order and tell them that you would like them to attach the request form when they mail the transcript out.
If you have anymore questions, feel free to ask. I was also confused on some parts of the application lol. Also, if I said anything wrong here, please correct me