cPanel offers a free SSL via Comodo or Let’s Encrypt, which can cover multiple domains.
1. Login to Cpanel and click on SSL/TLS.
2. Click on Manage AutoSSL
3.Make sure the cPanel option is slected (as the other is disable) and click Save
4. Click on the Option tab, It’s suggested to tick the “Allow AutoSSL to replace Invalid or Expiring non-AutoSSL certificates” option. Then Click Save
5.Click the Manage Users tab
6.Tick the sites you want to Enabled AutoSSL on, After doing this click the Green button that Says Enables AutoSSL on Selected. Then Click the Check button to the right of the site to immediately run AutoSSL
Your website will now have the SSL certificate added.