Group

Group Nodes are a collection of nodes that can be combined into a single node while selectively exposing inputs of the embedded nodes. Group nodes can simplify a node tree by allowing instancing and hiding parts of the tree.

See Blender's Group Node documentation

Group Node without a node group assigned to it | Group Node with the Volcano preset turned into a Group Node assigned to it.

Node Tree

Select the node tree (group) you'd like to use

• Group Output
• Group Input