To create a graph, firstly we need a sandbox to be created which is nothing but project folder were we have essential folders that supports a graph. Please watch the tutorial attached to know how to create a sandbox.
HOW TO CREATE SANDBOX ?
To create a sandbox, we need to click project, then click on create sandbox and provide the full path/folder.
HOW TO
CREATE GRAPH?
A collection of components connected and configured as per the business logic to load data marts is called a graph and please watch the tutorial attached to know how to create a basic graph.
Detailed explanation :