Help pleaaase!

I am a beginner and I really need your valuable assistance.
in a part of my workflow, I want to make the exchange of documents between my actors and I have no idea how can I do it. I detail a small example how I want it happens:
Actor1: Filled a document “document1” and then sends it to the actor2
Actor2: Receives the “document1”, rectifies it and returns it to the Actor1 with changes + a list of remarks.
If anyone can help me, this would be very generous of you!

A simple example would be:

Process 1: SendForReview
a Human Task with a file widget
an email task to send the email

Process 2: SendBackAfterReview
a Human Task with a file widget
an email task to send the email

Actor1 starts P1 and uploads the document, clicks submit and the email is sent with the attachment

Actor 2 makes their changes saves the file locally and starts Process 2, clicks submit and the email is sent with the attachment

This is as simple as it needs to be. Using 6.5 you can add the document to emails very easily…

NOTE: The changes + a list of remarks is really outside the scope of Bonita, these are really functions of the Office Suite you are using, for example Office Word has Comments and Tracking which is built into the document. LibreOffice I’m sure hs the same thing.