NEW IN R20
This Node itself has no functions but acts as a container for other Nodes that will be grouped. The principle corresponds to that of an XPresso XGroup and makes it possible to group Nodes, e.g., to save space in the Node Editor.
To group existing Material Nodes, select all the Nodes you want to group, right-click in the Node Editor and select Group Nodes from the context menu. The same command is also available in the Node Editor’s main menu as well as in the Node Editor’s icon bar.
If you want to add Nodes to an empty group, call up the Group Node and click on the arrow in the top half of the Node. This will take you to the inside of the Node where you can start adding new Nodes.
If you want to add values to a Node within a group from outside of the group, both input and output ports can be added to the group. To do so, right-click on the Group Node and select Add Input > Input or Output. Alternatively you can use the Group (with Ports) Node to create a Group Node with an input and output port. Additional inputs and outputs can be added via the context menu.