1. How to enable cross-server teleportation?

First, you need to install this plugin on all servers where warps are enabled
Then modify the following configuration in config.yml

# Cross-server teleportation identifier - must be the same as configured in BC for each server
serverName: "server"

Note: Must be configured correctly before creating warps, and cannot be modified!!!
If configured incorrectly, you need to use the /plw clear command to clear the wrong warps

2. How to configure custom menu command execution?

# Custom buttons You can infinitely extend the buttons you want here, just follow the same format as this example
# 1. command: "plm open menu" Execute command as regular player (recommended)
# 2. command: "[op] plm open menu" Execute command as OP (not recommended)
# 3. command: "[console] plm open menu" Execute command as console (recommended)
# 4. command: "[close]" Close current menu
# Note: ${player} represents player name
custom:
  # Back button
  back:
    enable: true
    index: 50
    name: "   &8[&aBack&8]"
    material: BARRIER
    isEnchant: false
    lore:
      - '&f- &7Click to go back'
    custom-model-data: 0
    # Command to execute
    command: "plm open menu"

3. Multiverse-Core-v5 causing this plugin to error?

You need to install the official MV compatibility plugin multiverse-legacy-api (opens new window)