The LenzFX interface is broken down into 4 major areas:
The Preview Area: The large black window in the upper left is the main preview window. To the right of this window are smaller preview windows for each part of the flare. You can generate new previews by double-clicking the main viewport.
Lens Flare Properties: Specifies the source for the flare(s), the size, seed number, rotation, and so on.
Lens Flare Effects: Controls specific effects for the flare, such as fades, brightness, softening, and so on.
Lens Flare Settings Tabs: Let you create and control the lens flare. Each of the 9 tabs controls a specific aspect of the lens flare.