Variables, Arguments, and Imports
The Variables, Arguments, and Imports are right below the workflow station. The variables and arguments are used to create number of values to the activities in the workflow. The Imports are the namespaces used in the workflow file.
Click on the Variables and a tabular column opens with Name, Variable type, scope, and Default. Select create variable.
Click on the Arguments and a tabular column opens with Name, Direction, Argument type, and Default value. Select create argument.
Click on the imports to view the namespaces of the workflow file.