Hi mad2kx
I'm sorry but this is not possible with ATUM, to activate these notifications you will need to look for a developer for custom developement.
However, if just having a log of who has done what on your website is useful to you, you can do it with your premium add-on Action Logs.
I leave you here the documentation where you will find a lot of info about how it works: https://forum.stockmanagementlabs.com/t/action-logs-documentation
And the link to the demo site in case you want to try the free trial: https://www.stockmanagementlabs.com/addons/atum-action-logs/
Hope this helps,
Best Regards,
Andrea.