i have a protected worksheet (has formulas and formatted) to be distributed to 200 other users. after filling the data all the worksheets come back to me. i will merge all the worksheets and work with them. so i don't want others to insert a new worksheet copy formulas, formatting and messing it in the distributed worksheet. either disabling from inserting new worksheet for copying the contents of the protected worksheet in to new worksheet or encrypt this sheet not to copy in another workseet/workbook.