For that, you have to give write access to the users who are trying to enter the data into the new edit pages.
You can refer to the image below,
Let me know if you face any issues,
Hope it helps!
I couldn't visualize your problem exactly but do you mean you can't add new data using the new edit page? If this is what you are asking maybe you haven't given the required entity access to the user role that you are trying to input data. If i get you wrong, can you maybe share a screenshot to see your problem exactly?