DATA VALIDATION Restrict User to add any data for a specific cell or range.
For Creating DATA VALIDATION Restrict User to add any data for a specific cell or range. please follow the few step shown below.
Select a cell where you want to have restriction for user to not enter any data.Go to Data TabGo to Data Validation and click on it and one dialog box will pop up.Select Custom from that dialog box and go down one step into Formula row in that dialog box.Now enter the Formula For example :- =B2="EXCEL HELP"Once added the formula just hit ok button in the dialog box and its done.NOW B2 Cell will only accept the value EXCEL HELPNow for that particular range or a single cell user cannot enter any other value then the cell contain already.If you want to show a message when a user select the restricted cell just go to Input message next to setting in the dialog box...