How do I install a WiFi certificate in Central 4.x

In case you want to install a certificate in Central 4.x, such as a WiFi certificate (EAP-TLS), you can do so as follows.

1. Put the certificate on a USB flashdrive (FAT32 formatted) and connect in on the screen.
2. In de Central settings you go to the wifi settings and choose Advanced:
   
   
3. In the advanced settings you click on Wi-Fi preferences:
   
   
4. Click on 'Advanced'
   
   
5. Click on 'install Certificates':
   
   
6. Click on the hamburger menu:
   
   
7. Click on the USB flashdrive:
   
8. Here you can install the certificated.