I have Norton on two devices but need to connect a third???
Extend your protection to your other devices
If your subscription allows multiple installations, you can install your protection on additional PC, Mac, or mobile devices at no extra cost. Find the number of seats that are available with your subscription to see if you can extend Norton protection to other devices.
https://support.norton.com/sp/en/us/norton-download-install/current/solutions/v118869637 18-Dec-2023
Share the download link to install Norton
You can send an email message with the download link to install the Norton product on your additional devices. You can also send the download link through text message, or copy the download link to share it later.
https://support.norton.com/sp/en/us/home/current/solutions/v91550471 06-Sep-2023
Send a download link through Email or SMS to install Norton protection on another device
If your subscription entitles you to multiple installations, you can send invites to install your protection on other devices. You can send the download link through an email or a text message, or copy the download link to share it later.
Video: How to download and install your protection on additional devices
https://support.norton.com/sp/en/us/home/current/solutions/v101015745 06-Sep-2023