Can we use plugins to enable players to move between different servers?

Simple answer is No

Ts3hosting

Simple answer is No

Well, ty

This is from the corrosion hour website but has seen this commit somewhere else too so probably gonna be possible in the future but do not know why Facepunch took so long to start thinking/working on this after 7 years while Minecraft supports this like charm...

Another interesting note is a new branch titled ‘nexus’, with an initial commit for the ‘nexus.redirect’ command. This command makes the client switch to a different server and is runnable from the server, which would imply that RUST servers will, at some point, start telling players to connect to a different server. There’s nothing definitive yet as to what this command is intended to do, but couple this command with the imminent introduction of the submarine, and perhaps an open-sea exploration may take players to more than just the sea floor..