Under Regions in a step, you now have the ability to set Layers and Index Layers.

All exisiting Layers set in a workflow, will now show in Index Layer.

You can continue using Index Layer. As a default the Layer will be set to 0. You can also choose to add Regions to multiple Layers and within those Layers have Index Layers (or sub layers).

We will be developing a feature to lock Layers - stay tuned!