BungeeKickAll will allow you to move all players from the server you're currently on to another, this will be handy if you need to do some maintenance or need to restart your server.
How to install
Simply download the file and place inside your BungeeCord plugins folder.
/bkickall <server> <reason>
Example Usage: /bkickall hub &aServer is restarting! Join back later.
<server> = The server you want to send all players to.
<reason> = The reason; this will be sent to the player in their chat (You can use colour codes with this option E.g. &4 = Dark Red).
Command permission is bkickall.use