If you want to use fast-connect function, you need to use the command of the plugin.
/sendplayer <player> <server>
The command can only using by console.
The command must use for the first time to add data of server that player connecting to.
Using with DeluxeMenus
'example':
material: 'dirt'
slot: 1
priority: 1
update: true
hide_attributes: true
display_name: '&b&lExample Server'
lore:
- ''
- ' &eLeft-click to join!'
left_click_commands:
- '[console] sendplayer %player_name% example'
- '[close]'