Create a directory with the name same as the domain name in <domain-dir> directory. For example, create <domain-dir>/siroe.com directory.
Copy uwcdomainconfig.properties file from <domain-dir>directory to the newly created directory.
Make the required changes to uwcdomainconfig.properties file in<domain-dir>/siroe.com directory. You can configure the default user preferences for global, calendar and address book.
Restart the web server to apply changes