The Generator Properties
panel provides access to the settings for the selected generator in the Layer Stack. The graph resource's exposed parameters and inputs can be controlled directly from this panel.
The generator's name is provided at the top. To change the graph resource used for the generator, click the name to open the Resource Picker panel.
Below are the graph resource's exposed parameters. From here, any exposed procedural parameters can be adjusted to change the visual properties of the resource.
To learn more about generators, please read our dedicated article here.