To make your livestream accessible only to a specific group of people, you can password-protect your livestream.
You can activate this in the livestream you have already created under “Player.”
If you scroll down a little, you will find the “Security” section. Click on “Edit” here.
Check the box next to “Protect with password” and enter a password in the line below (don't forget to click “Save changes”).
Your viewers will now need the password to watch the livestream.