How do I add multiple UE?

Hello.

How do I add multiple UEs?
It worked up to the point where I added SUBSCRIBER in webconsole.

In UERANSIM, add -n [number of UEs] when executing the nr-ue command.
If you need 3 UEs,

cd ~/UERANSIM
sudo build/nr-ue -c config/free5gc-ue.yaml -n 3

You can refer to the official website of free5gc:
https://free5gc.org/guide/5-install-ueransim/#7-testing-ueransim-against-free5gc