Short link: exact.help/How-to-enable-AutoSSL
This guide will go over how to enable Auto SSL for Cpanel accounts.
This action is done within your WHM from there type in the search bar "Manage AutoSSL".
The next step is to fill in the information, check, then enable. I've numbered the steps needed in the image below.
1. Type in the Cpanel Username.
2. Click Enable AutoSSL
3. Check the appropriate account.
4. After checking the box, click the green Enable button.
You can further "check username" on the right side there and also click "pending queue" to see the progress of approval.
You're all set, AutoSSL will provide blanket coverage.