Strength - determine the strength of the Behaviour.
Graph - click the icon to pop up a Graph Widget. This can be used to shape the effect of a Behaviour. See Graph Attribute.
A list for adding and setting Falloffs.
To add a Falloff either right click on the Falloffs row and select Add Falloffs > Falloff or connect an existing one.
Visibility icon (eye) - enable/ disable the Falloff.
Layer Mode - set the layer mode of each Falloff.
Normal (Add) -
You can reorder the list by simply dragging and dropping.
In the example below we have 3 Falloffs connected to a Color Blend.
The Color Blend translates values of 0 as pink (the color on the left hand side of its gradient) and values of 1 as green (the color on the right hand side of its gradient).
Falloff 1 is a Circle and its Layer Mode is set to Normal (Add).
Falloff 2 is a smaller Circle but its Layer Mode is set to Minus.
Falloff 3 is a Rectangle and its Layer Mode is set to Multiply.
Falloff 1 simply passes values of 1 to 0 (from its centre out towards its edge) which the Color Blend converts from green (1) to pink (0).
Falloff 2 subtracts its values from Falloff 1's. In the centre, both Falloffs have a value of 1 and so because the Color Blend gives us pink.
Falloff 3 uses its values to multiply the result of Falloff 2. Inside the rectangle the Falloff is passing values of 1 and outside 0 (we've used the Graph to create a hard falloff). so everything outside the rectangle is pink. Any values within the rectangle are multiplied by 1 so remain unchanged.