Continuing with layers the time has come to look at groups and layer masks in Mari 3. We can use groups in Mari to declutter and also to contain effects of layers making a material approach more manageable. We can cut away content inside a group or a layer using layer masks or layer stacks. In this video tutorial I go through the basics of groups, layer masks and layer stacks for the Mari newbie in mind. In a later tutorial I will demonstrate the way I use layer groups and sharing using channels and layers for a pre-bake layer workflow.