Note: It may take up to 24hrs for the initial SSL from Let's Encrypt to be applied. There is no icon or menu for Let's Encrypt. A script runs every morning on the reseller servers. This script checks if a domain has a certificate, and if it doesn't it will automatically install an SSL certificate on that domain. You can use a site like https://www.sslshopper.com/ to test if the SSL has been applied.
Step 2 - Find and click on the Feature Manager
Step 3 - Type in a name for the Feature List and click Add Feature List
Step 4 - The simplest thing to do is to tick the Select All Features For: option
You can tick/untick features depending on what you want to be available to the cPanel accounts. The important feature here is AutoSSL.
Once you're done, scroll down to the bottom and hit Save
Step 5 - Search for and click on the Edit a Package option in WHM
Step 6 - Select the Package you want that Feature List assigned to and click Edit
Step 7 - Select the newly created feature from the Feature List (it will be appended to start with your whm username) and hit Save Changes
Step 8 - The last step is to reapply the package. Find the Modify/Upgrade Multiple Accounts option in WHM
Now, select the Domains/cPanel accounts you want to apply Let's Encrypt for, chose the package (even if it's the same package they're currently on) and hit Change
The Packages will be refreshed and Let's Encrypt will be applied. Note that the script which checks for and applies Let's Encrypt certificates runs between midnight and 6am every night so you may have to wait up to 24hrs for the certificate to be applied.
How to Enable Let's Encrypt on Reseller Hosting
To make it easier to get in touch with us, from the 24th of March 2016 all support tickets will need to be submitted from your Crucial Control Panel.