Protect workbook from authorized user

I have created a workbook Z_WB_TEST in BEx Analyser. I want to protect my workbook so that authorized user can't do modification in my wookbook. I want othe user can only change variable value and run that workbook and save it. Other than this he should not do any changes like delete, hide row column etc.

I want this type facility because a user will provide me report after executing workbook Z_WB_TEST.

Kindly help me.

regards

nk