When you open the System Options dialog box, some options may be locked. These options will appear unavailable (grayed out), with a lock icon .
You may be able to unlock and change those options if your administrator allows it. Hover the cursor over the locked option. If a tooltip displays the administrator’s name and email, contact the administrator and request the password. If you hover the cursor over the locked option and no tooltip displays, then the administrator is not allowing that option to be unlocked.