Xubuntu user = restore, password = password
Restore user = admin, password = password
You should create a reseller, and under the reseller, create a client and an initial user. It's that user account that will be able to start creating targets and backing up your network.
We're working hard to complete this release, and some basic documentation is coming shortly to the Trac website: http://trac.holonyx.com/restore.