Can I customize the login to display the default group?
There is no default group (waves hand). This is not the group you're looking for...
You can however set the "homepage" config item (menu -> Admin -> Configuration -> List Configuration) to devices and will see your device list when you log in to OpenAudIT Community.
Does that do what you need?
Groups Show items Create group classification As in version 1.3.2 Insert XML Below