Who can use this capability
The sheet Owner and Admins can add or edit a column. A license is required.
To use Activity Log, you must be a licensed user with Editor or higher sharing permissions to the sheet. (More information on Activity Log sharing here.)
Activity log is available with Business and Enterprise plans only.
To view changes that have been made to a Smartsheet item, you can look at cell history, include System columns, or use Activity Log.
Right-click a cell and select View Cell History to see a log of changes made on the cell level, who made the changes, and when they were made.
When needed, you can also select the information and use the keyboard shortcuts Ctrl + C (Command + C on Mac) to copy a previous change and Ctrl + V (Command + V on Mac) to paste that information back in a cell.
System columns Modified (Date) and Modified By to show the time that each row was last edited and the collaborator who made the change, on each row in the sheet. For more information, see Use a System Column to Automatically Add Information to a Row.
Click the Activity Log icon in the right Feature Bar to see a list of all changes made to an item, who made them, and when they were made. This includes changes such as row deletion (with the data that was deleted), who has viewed the item, and sharing permission changes.
Activity Log can be filtered and exported. For more information on Activity Log, see: Track the History of Changes with Activity Log.