How do I Turn on account restrictions?

Click the gear-icon located at the upper-right corner of the site Select the Settings option indicated by the gear icon In the Account Restrictions section, press the toggle button to turn on Account Restrictions The toggle will turn green and the following message will be displayed “Account Restrictions is currently enabled”
For More Information Please Refer:
https://en.help.roblox.com/hc/en-us/articles/360000375686-Account-Restrictions
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