Is there a way to operate UE individually?

Q/A
#1

Hi!

The following command activates three UEs.

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

However, I would like to select and operate any UE from the activated UEs.
For example, send a request from imsi-208930000000002.

#2 
nr-ue -c myconfig.yaml -i imsi-286010000000001
nr-ue -c myconfig.yaml -i imsi-286010000000002

Can I use the above command without modifying free5gc-ue.yaml?