FortiGate | FortiClient EMS Put a personalized address at each start with broadcast

Hi,

Let me explain, each Forticlient detects my Firewall directly at the first startup, and asks if we want to save the address to stay connected. I'm trying to change the address with that of my EMS which will manage all my FortiClients now. I saw something that said that Fortigate was sending a broadcast address that will display the window I want to have when I start. But where do I enter my EMS address so that Fortigate can transmit its IP address to all Forticlients who wish to connect?

Sincerely,

Nicolas