https://learn.microsoft.com/en-us/dotnet/api/system.workflow.componentmodel.design.sequentialworkflowheaderfooter?view=netframework-4.8.1
SequentialWorkflowHeaderFooter Class (System.Workflow.ComponentModel.Design) | Microsoft Learn
Represents a header or footer that is associated with a SequentialWorkflowRootDesigner.
class systemworkflowdesignmicrosoftlearn