How to change "Machine" of "Administration Server" without using the Administration Console

Dear Oracle Support,

I hope this message finds you well.

I tried to set the "Machine" for "Management Server" from the "Server Summary" but could not list a value.

I checked the following link.

https://docs.oracle.com/html/E24401_02/taskhelp/machines/AssignServerInstancesToMach
ines.html

However, it stated the following:
Note: You cannot change the machine of the Administration Server using the Administration Console. You cannot change the cluster or machine of a running server.

Please tell me how to set the "Machine" value without using the Administration Console.