Create Node Menu
At the top of the Create Node Menu is a search bar. To search for a node, type any part of its name in the search field. The search box gives you autocomplete options, and you can press Tab to accept the predictive text. It highlights matching text in yellow.
The Create Node Menu lists all nodes that are available in Shader Graph, categorized by their function. User-created Sub Graphs are also available in the Create Node Menu under Sub Graph Assets, or in a custom category that you define in the Sub Graph Asset.
To add a node to the workspace, double-click it in the Create Node Menu.
Contextual Create Node Menu
To open a contextual Create Node Menu, click and drag an Edge from a Port, and then release it in an empty area of the workspace.
Master Stack Create Node Menu
The Create Node Menu will display all available blocks for the master stack based on the render pipelines in your project. Any block can be added to the master stack via the Create Node Menu. If the block added is not compatible with the current Graph settings, the block will be disabled until the settings are configured to support it.