Write next to PDF

Sometimes I want to write a lot of text right in the margins of a PDF and I thought it would be amazing if we could simply write next to the pdf.
Then if text would be next to the pdf, and we export it, it could change the size of the pdf page and export the written notes simultaneously.

Hello

Would you please upload some screenshots or videos describing it in detail? That way I can help you better.

Kind Regards,
MarginNote-Edward
Support Team

I just discovered the right margin export which is great, but I want to work in the right margin instead of the mind map.