In collaborative settings FreeStyler uses a collaboration server called MatchMaker. The MatchMaker server can hold several sessions at a time and synchronizes the content of the session (pages) among all users.
First you have to start the matchmaker. The file is in the freestyler folder. You can create new or join existing sessions with the FreeStyler connection dialogs.
Creating a session on a cooperation server:
If you join a session your current content will be transcribed. Click on the button "connect to server" and choose a session name.