How do I create a domain alias?

Step 1 - Login to your cPanel account.
Step 2 - Navigate to 'Domains' and click 'Aliases'. 
Step 3 - Under 'Create a New Alias' enter the domain name you want to use as an alias.
Step 4 - Locate the domain from the list and click 'Manage Redirection'.
Step 5 - Under 'Alias Redirection' enter the domain name you want the alias to redirect to and click 'Save'.