Lock Filters in Reports


Is there a way to do this? I have a master request sheet that employees can request all types of things. I want to then setup reports for each department to see their requests. So Marketing for example can see all the marketing requests. I don't want them to be able to see HR requests though. So I would like the report to lock the filters and only show marketing requests. I don't see a way to do this? Any advice would be appreciated!