How Do I Override a Value In the Following Situation

I don't know how to give a proper description to this problem. Attached is a workbook I created. The ask is when the client receives the workbook, they need to be able to enter in a hardcoded number in sheet "Client" cells B2:B3. When they enter a number into B2:B3, the values on sheet "Employee" cells B2:B3 need to update to these hardcoded values. The issue is that cells B2:B3 in "Client" rely on cells B2:B3 in "Employee." The client cannot touch the "Employee" sheet whatsoever. I was also told I am not allowed to create another sheet that will be hidden and it all needs to come from these two sheets. Any idea?