title: Excel: How can I give different people various levels of protection and access
body: <p>I have an excel spreadsheet that 3 different types of people can access, I want these 3 types of people to have different access rights. I want there to be people with full access, so can change the workbook, change the cells, change the contents and formats of the cells, etc. there are people with some access, so can only change some cells and can go on any of the sheets that are visible when the spreadsheet is access, and I want there to be people with limited access so can only go on certain sheets, change cells that are necessary to retrieve the data that is associated to that value, and cannot save the file.</p>
  
  <p>Is there a way of doing this?</p>
  
  <p>What I would really like is for when the file opens to ask the user for a password, and, dependent on what the password is, different cells are locked and different levels of access is applied.</p>