The help centre allows you to control the availability of help articles for specific roles or domains. This can be useful if you want to restrict access to certain articles or make them available only on specific pages. Here's how you can control the availability of help articles for specific roles or domains:

• First, open the help article that you want to control the availability of.
• Scroll down to the bottom of the article page, where you will find a section labelled "Availability."

• To make the article available on specific domains only, enter the URLs of the domains where you want the article to be available in the "Domains" box. 
• You can add multiple URLs by separating them with commas.
• You can add different URLs in this box. And if you want the help article on all domains, just click on the check box.

• If you want the article to be available on all domains, simply check the "Available on all domains" checkbox.
• To make the article available only to specific roles, enter the names of the roles in the "Roles" box. 
• Again, you can enter multiple roles by separating them with commas.
• Save the changes by clicking on the "Save Answer" button at the bottom of the page.

By following these steps, you can control the availability of help articles for specific roles or domains. This can be helpful in ensuring that the right users have access to the right information and that sensitive information is kept secure.