how to create a new client connection FROM the Server-side using python socket programming?

I'm using python socket programming to build a mock VPN service. the way I want it to work is that the server is launched, then the user client (Host-U) is launched. The Server should send a message to the Host-U asking the user to make a selection of which site they wish to connect to. Once the user makes their selection, the server should take that info and open a new connection with another active client (Host_V), and begin tunneling data between the two clients. Is there anyway to create the new connection at the server side of the process? all the examples I found online show the server being the one to listen for new connections and then accept them when the client reaches out.

Here is the code I'm working with as a base. How can I modify this to achieve my end goal?

# Client IP and Port configuration
HOST = '127.0.0.1'  # Server's IP address (localhost)
PORT = 65432        # Port the server is listening on# Start the client
def start_client():
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as client_socket:
        client_socket.connect((HOST, PORT))  # Connect to the server
        
        while True:
            message = input("Enter your message (type 'exit' to quit): ")
            if message.lower() == 'exit':
                print("Closing the connection...")
                break            client_socket.sendall(message.encode())  # Send the message to the server
            data = client_socket.recv(1024)  # Receive the response from the server
            print(f"Server response: {data.decode()}")
    
    print("Connection terminated.")if __name__ == "__main__":
    start_client()

# Server IP and Port configuration
import socket
import threading

# Server IP and Port configuration
HOST = '10.9.0.7'  # Server IP (localhost)
PORT = 4433        # Port for client connections# Function to manage client connections
def handle_client(conn, addr):
    print(f"Connection established with {addr}.")
    
    while True:
        try:
            data = conn.recv(1024)  # Receive data from the client
            if not data:
                break  # Terminate the connection if no data is received
            print(f"Received from {addr}: {data.decode()}")
            conn.sendall(f"Server response: {data.decode()}".encode())  # Send the received data back to the client
        except ConnectionResetError:
            print(f"Client {addr} has disconnected.")
            break
    conn.close()
    print(f"Connection with {addr} closed.")# Start the server
def start_server():
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as server_socket:
        server_socket.bind((HOST, PORT))
        server_socket.listen()
        print(f"Server listening on {HOST}:{PORT}...")
        
        while True:
            conn, addr = server_socket.accept()  # Accept a client connection
            thread = threading.Thread(target=handle_client, args=(conn, addr))
            thread.start()  # Start a new thread for each client
            print(f"Active connections: {threading.activeCount() - 1}")
            
    if __name__ == "__main__":
        start_server()