I'm Sumit Bansal, your teacher for this Excel Training. I are already training people today in fundamental/Innovative Excel and dashboards for much more than a decade now. Within this video of the Free of charge Excel training, I'll explain to you ways to lock cells or guard worksheets and workbooks https://www.diigo.com/item/note/7f66f/dv69?k=f44abbb2fc4554939397a79885037e77