ETC Congo Family v6.4.0 - Manual (Page 725)

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Create a new effect layout (6.0)
1. Open the effect layout editor (Browser >Effects >Image Effects >Effect Layouts...).
2. Press INSERT. You will get a popup where you can define the width and height in "pixels".
One pixel is the smallest possible resolution, and usually a single light source.
3. Press MODIFY in the Layout column of the new layout. This opens the layout editor tool.