How to apply Extended Long Term Security updates for Joomla.

Extended Long Term Security (eLTS) Support is commercial, long-term security update program for the Joomla core that is provided by the Joomla project. 

At the time of this writing, it offers additional security support for Joomla! 3 installations until February 17, 2025.

To apply these eLTS updates from Watchful:

1. Purchase an eLTS license from the Joomla project. 
2. On the eLTS website, enter the domain name for the site and note the custom update URL for the domain.
3. In the Joomla backend, locate the Joomla update settings. Select 'Custom URL` and enter the URL from step 2.
4. Repeat steps 1-3 for all of your sites.
5. Refresh the data for these sites in the Watchful Dashboard. eLTS updates will be shown in the updater and can be applied as any other update.