CS tool, There is possibility define same option parameter more times.

[hsvabek@localhost bin]$ java -jar wildfly-elytron-tool.jar credential-store --add myalias --secret supersecretpassword --location="test.store" --password mycspassword --summary --salt 12345678 --iteration 230 --add alias2 --secret secretValue2 -create         
Alias "myalias" has been successfully stored
Credential store command summary:
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/subsystem=elytron/credential-store=test:add(uri="cr-store://test.store?modifiable=true;create=true;keyStoreType=JCEKS",relative-to=jboss.server.data.dir,credential-reference={clear-text="MASK-uNWeyrmbByBEjgZM1FAPQW==;12345678;230"})