Use the checkbox to select one or mulltiple Revit categories that you wish to use to use the Python script with.
Please note that the categories are derived from the file you've uploaded. A list of all the categories can be found here.
Category: A Category controls the organization, visibility, graphical representations, and scheduling options of Families within the Project.
Family: A Family is a grouping of 2D and/or 3D information that serves to represent a discrete building or documentation element in the Project. It defines parametric, graphical, and documentation requirements.
Type: A Type is a specific representation in a Family defined by distinct parametric, Type graphical, and documentation characteristics which makes it unique from other Types in the Family.
Instance: An Instance is an individual representation of a Type in the Project defined by unique parametric, graphical, and documentation characteristics which makes it unique from other Instances in the Project
