Use
You create a step in a workflow definition in order to execute tasks or to control the workflow, for example. A step is always created in a
block. This block contains at least the created step and its defined outcomes.Procedure
You create a new step in the workflow definition by either changing an undefined step or creating a new step between two existing nodes.
Changing undefined steps
Creating new steps
Inserting tasks from the task area
You can insert a task displayed in the task area into the workflow definition as an activity.

If you have selected a workflow definition (multistep task), you can also choose Include workflow definition. The steps of the selected workflow definition are then inserted.
Result
If you have created a new step, a step of the chosen step type is inserted at the chosen
position / replaces the undefined step. You go directly to the step definition. Undefined steps are also inserted in the workflow definition for some step types.For further information, refer to
Step Types and Their Symbols.If you have inserted a task from the task area, an activity which references the chosen task is inserted in the workflow definition.

The binding is created automatically by the system and you can adapt it to suit your requirements.