Things gone a bit strange and you want to start PartyBeast again from fresh?
Go to the server you setup PartyBeast on and type
!pbDeleteConfig in a text channel PartyBeast can see.
PartyBeast will delete all associated configuration for this server.
Now is a good time to clean up any Categories and Voice Channels from the old config. Just right click and delete them as normal.
Rerun the Initial Setup to get PartyBeast up and running.