Read first the Connection dialog
page to understand the dialog fields( host, port, user, etc. ), SSH tunnel, etc..
OrientDb can be downloaded as zip, unpacked and started by executing server.bat.
Before starting it edit the file config/orientdb-server-config.xml and replace in the section users
Restart the server. The configuration file should have something like this:
You can test the connectivity by starting bin/console.bat
connect remote:localhost root root