I am a student and I have to create a collaboration with my professor for an assignment spread out throughout the semester. When I create the collaboration and I open it, it takes me to a blank gDoc. However, I want it to open to a gDoc I already have for the assignment as it's the one our professor has created for us to complete the assignment. How do I link the desired gDoc to the collaboration so that when I click on it the correct gDoc app
ears and not a blank one?