Add a Managed Account
Managed accounts can be created from scratch or you can convert an existing non-administrator account to a managed account. First up, creating a new managed account: Before you begin, make sure you first log in with an administrator account.
Convert Existing Account to Managed Account
To convert an existing account to a managed account start off by making sure you are logged in with an administrator account: The new Managed Account will be created along with a new home folder or the selected existing account will be converted. Parental Controls will now be enabled.
Parental Controls Limit App and Web Use
Parental controls on a Mac provide a means of restricting and monitoring access to a computer. You can control the applications that can be used, the websites that can be accessed, as well as control which peripherals can be used such as allowing the iSight camera or DVD player to be used. You can also set time limits on using the computer, as well as limit iChat or Messages and email to receive messages only from accounts that you approve. If your children spend a lot of computer time playing games, you can also limit access to Game Center.
Finder and Applications. Depending on the version of OS X you are using, you can choose the normal desktop and Finder, or a special Simple Finder that only allows access to the user’s home folder and any applications you select. If you choose the normal desktop and Finder, you can still restrict access to specific applications, although all of the items in the Applications folder will remain visible. You can also enable or disable the use of the Mac’s built-in iSight camera and limit how Mail is used. Content. You can put profanity filters in place to limit access to specified words that are included in the Mac’s Dictionary application. You can also choose to filter websites, or block or allow access to specific websites and their content. Mail and Messages. Almost everyone needs (or at least wants) access to email or Messages. By enabling parental controls, you can decide who will be allowed to send messages to a managed account. You can even choose to be notified if the managed account user tries to contact someone who isn’t on the email and Messages list. Time Management. You can use a managed account to set limits on when the Mac can be used, and for how long it can be used. There are separate limits for weekdays, weekends, and school nights. Logs. You can configure the parental controls to maintain logs of visited websites, blocked websites, application usage, and iChat usage.