NetCode. Connect to Server in ServerSimulationSystemGroup

Hi!

Developers, please tell me!

Can I connect to the server by calling the "Connect" method in the ServerSimulationSystemGroup group?
My attempts only made it clear . that when this connection is made, the data can 't be sent and an error occurs that says something like : " I Can 't send data without a remote host"

My game server needs to connect to the main server.
Now I have to build a server with UNITY_CLIENT, and have the logic of the client world in it .
It's not cool)