What happens when two people update the same cell at the same time?
Both saves will be recorded and visible in cell history. The latest save will be the latest data in the cell.
The same applies with more saves.
If user A makes a change, saves, makes a change, saves and user B has the sheet open and then makes a change and saves, B wins.
Last save is last. The version history will show each save.
When working with others, watch for "refresh", and refresh/save often.
Some form of communication may be useful - chat, voice.
Before making wholesale changes (like adding/deleting rows), best to warn your collaborators.
Craig
This community is the best! thanks guys