The Paper Lantern theme in cPanel has been replaced by the more modern and updated Jupiter theme, which brings several enhancements and improvements. One notable change is the integration of the Add-on Domains and Sub Domains options into the new “Domains” option, making domain management more convenient by consolidating everything in one place.
Adding a new domain using the Jupiter theme in cPanel is a straightforward process that can be accomplished by following a few simple steps. Here’s how:
Step 1: After logging into your cPanel account, navigate to the “Domains” section. 
Step 2: Within this section, you’ll notice a blue button located at the top right corner labeled “Create A New Domain.” Click on this button to initiate the process of adding your new addon domain.
Step 3: To add an Addon domain using the Jupiter cPanel theme, enter the domain name in the designated “Domain” text box.
Uncheck the option that reads “Share document root (/home/username/public_html) with ‘domain.tld’.” By doing this, you ensure that the files for this domain are stored separately from your other domains, preventing any potential conflicts.
You do not need to edit any other field.
Step 4: Once you’ve completed these steps, click on the “Submit” button to successfully add the new domain to your cPanel account.