Hi Martha,
Are these fields that you never want to be able to edit on all types of agreements? Or just on some types of agreements? What fields are you trying to prevent from being edited? Are these legacy agreements? Are you trying to not allow edits on fields after integration with ECC?
Can you provide a little more detail on exactly what you're trying to do? I don't think we have enough information.
You can make fields read-only using page customizations and you can also do it conditionally based on Document Type for example but I think we need a bit more detail.
Thank you,
Rosemary