Peerdraft plugin

Peerdraft allows users to collaborate on files synchronously, in real time (where you see others working in parallel, as with Google Docs, or other realtime syncing apps).

Peerdraft for Teams adds the functionality of asynchronous synching, whereby collaborators can update the same file at different points in time.

See: How to set up a collaborative vault for course in AiEthics#How to set up a vault for collaboration in Obsidian using Peerdrafts for Teams