The first step you’ll need to do is locate the “Add a package” link from the left menu inside your WHM as shown below.
After you’ve clicked on “Add a Package“, you’ll see the options for the package as shown below.
You will want to ensure you specify realistic values for each option on the package specification list & then click “Add“.
Once you have created your whm package, you can now select the package to be used when you create a cPanel web hosting account.