http://localhost:9990/console
first i choosed option (a) which is ManagementRealm .
second i typed the realm which is moh and then the username which is abc and then the password which is 123
third i answered with yes about to add the user abc to realm moh
forth the server gave me some information about the location of mgmt-users.properties file twice one at standalone directory and the other at domain , then i pressed any key to continue , then the window is closed.