excuse me for answering so late .
for the beginning we can create a loose referencing context.
each of us opens a separate page, which we link with each other
(e.g. three subjects (A, B, C), then A has a link to B and C, B to A and C, and C to A and B) .
so we can discuss the next steps for this digital community .
but as long as we are two people, email does it too .