Hi @NitaP
You can do this with our premium add-on ATUM Export Pro. With this add-on you will be able to export almost any kind of data at your site, in this case, products, import it to a spreadsheet to edit it in bulk, and then import it again to your site.
I leave you here the link to the documentation where you will find useful info about how it works: https://forum.stockmanagementlabs.com/t/atum-export-pro-documentation
And the link to the demo site in case you want to try the free trial: https://www.stockmanagementlabs.com/addons/atum-export-pro/
Best Regards,
Andrea.