Looks like he set up several VPN interfaces and configured all of them as WAN. Since there are now multiple WAN interfaces available, he set up appropriate multi-WAN support. I've never set up such a configuration, I can only direct you towards the Wiki on MWAN: https://openwrt.org/docs/guide-user/network/wan/multiwan/start.
It's hard to tell from your incomplete screenshots how this is configured exactly. It would be better to have a look at the configuration files in /etc/config (please redact private information if you post them here).