From the home page of your B12 Editor, click on Pages, and then select the page that you would to password protect. Click on the gear icon in the top-right corner of the left-hand editing pane.
From the dropdown menu, select "Password." From there, fill out the form that appears, making sure to fulfill the requirements detailed above the form.
Once the form has been filled out, click "Set" and then "Publish" in the top right to push the change to your live website. Once you've done that, you're all set to go!
Note: If you're looking to automatically generate password-protected pages for leads and clients or want to create sign-in pages for customers, you will want to look into a third-party application like Membershipworks, which can be embedded into your B12 site.
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