I need to set some formula or rule by which whenever I am entering some value into the cells of a particular column only that cell can be visible. All other cells of that column will be remained encrypted. That means suppose I am keeping my username and passwords in some excel file. There the site name, username can be visible, but the cells in the password column will be in encrypted format. When I click on a cell in that password only that cell's content will be visible to me.