This page covers the basics of the vore plugin: picking a role, eating a prey, and the options both sides have afterwards. The plugin also has a /vohelp command if you want the in-game reference.
Everyone picks one of three roles with /vorole <role>:
A player's role shows above their head next to their nameplate. Use /volist to see the full list of players and their roles.
To clear your role, use /vostop.
Once both players have a role, the pred (or switch) eats a prey (or another switch) by right clicking on them three times. A message appears at each stage.
On the third click the prey is swallowed and stored inside the pred's stomach, which is a build. Every player has a default stomach to start with. Preds who want their own build position themselves where the prey should appear and run /vosetgut. See Stomachs for how that works.
Once a prey is eaten, both sides have a few options. Most are named after what they do.
The pred can:
/vorelease./vodigest. This also refills the pred's food bar.Either side can use /vostop. This releases you from the pred, releases your current prey, and clears your role.
Prey can still take damage while stored, such as drowning, fire damage, and PvP. If a prey dies this way they are marked as digested. Otherwise prey can be stored indefinitely.