WHMCS can be installed via cPanel & WHM using the Site Software feature in cPanel & WHM version 76 and later.

To make this available to website owners, the server must run cPanel & WHM 76 or higher and you must enable it within WHM.

To do this, follow the steps below:

1. Log in to WHM.
2. Navigate to cPanel » Install cPAddons Site Software.
3. Check WHMCS in the list
4. Click Update cPAddon Config.

Once the process finishes successfully, WHMCS will be available for installation via cPanel:

In the next article we'll look at how  WHMCS  can be installed via cPanel.