You have the option to playback your footage recorded on one PC (console) from another one, where you only need to install the playback functionality. If you activate the remote playback service on the console pc (required for this to happen), the only thing you need to do on the other (playback) pc is, when selecting the source/reels for playback (that "Search Database" option top right), and in the selection click on the house itself, you can add console-pc's via IP-address, username and password [remember password]. You can then select same footage as on console.
You could have multiple console-pc's, and multiple playback pc's, or any combination thereof...

2 drawbacks: You cannot delete footage on any other machine than console, and you will use same network bandwidth for playback as recording is done over (unless one access is wired, the other wireless).
Hope this is a little clearer than mud.