First activate the NOC-PS For WHMCS module:
1. Download the module archive from the client area and extract it.
2. Upload the module to your WHMCS installation.
3. Go to the WHMCS Admin backend, click on Setup → Addon Modules.
4. Click Activate at NOC-PS For WHMCS.
5. Click Configure, enter your License Key and select Full Administrator at Access Control.