Concerning toKaspersky Internet Security 7.0 (all builds)
By default the Teenager profile in the Parental Control component is disabled. In order to enable the profile and to reconfigure the profile settings, do the following:
open the main application window
click the Settings button
select Parental Control under Protection
in the Profiles section click the Settings button
go to the Teenager tab
check the box Use profile
set the password for the profile in the Password field
Password should be specified if in the current session you will have to switch profiles from Child to Teenager or Parent. If the password is not set, the made changes will not be applied.