The manual outlines a standard procedure for getting the software operational:
The manual instructs that to change settings, you often need to enter a configuration mode. This is typically done by pressing a specific combination of buttons (often holding the STOP and MANUAL buttons simultaneously while powering up) or by accessing a setup menu, depending on the firmware version.
Links are created by dragging from a block's output to another's input. The manual notes that valid links often turn green in the interface, while invalid ones remain red.