Using Fixture Builder

I am using the Cat v4.06 Beta controlled by HOG3. I need to make a new fixture profile in order to control which layers go into the sub mix. I have never used fixture builder before.

Here is what I need: the fixture has 16 channels, channels 1-12 select the coresponding layers 1-12, with channel 13-16 being spare.

The DMX values for each channel are: 0-10 no effect, 11-127 Deselects layer from mix, and 128-255 selects layer in the mix.

How do I go about creating this?
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