- Go to Your Account in a web browser and scroll down to Profile & Parental Controls.
- Click the drop-down arrow next to your main account profile, then click Change and enter your Netflix password next to Profile Lock.
- Set your four-digit PIN after checking the box to require a PIN to access this profile. Naturally, you'll want to select one that your child will not be able to guess.
- Check the box to make adding new profiles require a PIN. (Please keep in mind that this option is only available after you've added a Profile Lock PIN to your account's main profile, which is the first one on the list.)
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