Fencing device on Proxmox 8.x ?

Hello all, I'm trying to find a way to have and configure fencing devices on a test cluster, but can't find any good documentation.
In the manual, in section 15.7 there are very few information, but is reported to be present.
Ha Manager Fencing
Can someone point me to some documentation about configure and use some fence device ( like APC/ILO/IDRAC for example) ?
Eventually, also some good documentation on different kind of watchdog modules would be nice.

Thanks in advance

Pigi_102