1st Workaround - In Tab Sheet Properties, in condition add all 100 users by using OSUser function. Its traditional way. Faster way if you want implement immediately.
2nd Workaround - Get access grid security design in Access or excel. And in script embed this access control. This you need to design from core script.
3rd Workaround - Get all AD user list in excel, add excel in QVW. and pass reference of excel in to sheet properties condition.