It is possible to prevent the user from making permanent changes to their account by ticking the first of the boxes ('Lock profile ... 'r the next time they log in, their account will have reverted to its previous settings. By ticking either ofthe two boxes labelled' Log off after', users can have time restrictions placed on their computer usage. If this option is selected, it's a good idea to also choose the option to display the 'session countdown' so there is time far the user to save files before an automatic log-off.