It is a good idea to have Roll Call Server automatically start up when a machine is turned on. Here is how you do it:
Mac OS: To automatically start Roll Call Server on a Mac, the easiest way is to add Roll Call Server into the Log In Items for the Administrative User on the machine. If you do this, however, remember that Roll Call Server won’t be started until that user has been logged on and it will shut down if that user is logged out. You can also configure the machine so it automatically logs into your Administrator user on startup. If you do this be sure to set the display to go to sleep and require a password to bring the display back.
Windows OS: Windows makes this easy. Open up Roll Call Server. You might need to right click on the Roll Call Server icon on your desktop and select to run as Administrator. Once Roll Call Server is started, click on the File Menu and choose Register current database as service. Shutdown Roll Call Server and open the windows Services. At the top of the list should be 4D Server: ROLLCALL. Double click and select to automatically start.
Apply the change and start the service. Roll Call Server will now run as a service in the background. You will no longer see itm running on the task bar. You can now log out of the OS user and Roll Call Server will continue to run.