AppEUI config problem

ChirpStack Application Server
1

Hi all!
I am install latest version Lora App Server and can not find where set AppEUI for application.
MQTT rx message contains application_id
topic=application/1/node/8cf9574000000282/rx

How set AppEUI?

2

https://forum.loraserver.io/t/where-do-i-set-the-appeui/381