I am building a project tracker in a table and will be tracking projects assigned to multiple people across multiple dates. Instead of adding a column each time I wanted to give a current update a project (this would create a lot of blank cells as not every project would be updated on the same day), I would like to make it so that the user can see the previous changes made in the "current update" cell and shows when each change was made and what was said. How can I do this?