NOTE: Patcher is a more flexible alternative to Fruity Layer.
The Layer Channel does not make sound, it passes note data from its Piano roll and controller input to any linked Channels (child channels). Layers can be used to create complex instruments with different samples or to mix the sound of several instruments in one Channel, controlled by a single Layer Channel. The child of a Layer Channel can be any Sampler Channel, Fruity Plugin generator or VST/AU, except another Layer Channel.
Setting Child Channels
To set child Channels:
Things you can do: You can use a Layer Channel to create multi-sampled instruments by assigning unique keyboard regions to each child. You can include an Envelope Controller as one of the children and use it to automate the crossfade control. Here imagination is key, think horizontal (keyboard) and vertical (velocity, modulation, etc.) layering.