I try to do every function in the system with different access level. As for Staff, I can only do view information. The system does not let me edit, add and delete any record by Staff user. Next function is Admin. I do add, delete and edit with admin user. I can add new staff and update information of Staff and Hr. I will login with Hr user. I can do function by hr user such as Admin.-I try to do every function in the system with different access level. As for Staff, I can only do view information.　The system does not let me edit, add and delete any record by Staff user. Next function is　Admin. I do add, delete and edit with admin user. I can add new staff and update information of Staff and Hr. I will login with Hr user. I can do function by hr user such as Admin.