Additive

Additive mode recursivly adds variations applied to one parameter to other ones by multiplying variations by the distance in the stack, between the clicked layer and the current layer.

Layer Time Offset

Select a group of layers and start to time offset the one at the top of the stack. The following will occur:

The layer you click on will be the one that travels only 100% of the distance. For the others, the further away they are, the more they will be subject to a multiplication factor for this displacement.

Distribution Across Other Parameters

Additive mode can be used to apply these variations over several parameters that are the same type.

In the example below, we click on the layer at the top of the stack, which defines it as the active layer, then we press the shift key before clicking on the lowest layer in the stack.

With this set of layers selected, we can modify the Position.Y parameter of the active layer, as displayed in the Inspector, in the Properties section.

The distance traveled by the active layer is reported on the other parameters, multiplied by a factor of 2, then 3, then 4, etc.:

Changing the Active Layer

To define a new active layer, simply press the ctrl/cmd key, click on a layer to deselect it, then click again while holding ctrl/cmd to reselect it.

Changing the Position.Y value again will have a completely different effect.