Hello,
https://pve.proxmox.com/wiki/High_Availability_Cluster_4.x#Fencing
this link tells that:
Proxmox VE Cluster 4.0 or greater comes with watchdog fencing. This works out of the box, no configuration is required.
So I suppose there is no confiugration required. Please confirm this. If needed plz share link how to confiugre fencing.
Watchdog fencing shouldn't require any configuration.