You can use the Utility shape to call an activity from a flow. By using an activity, you can use fewer shapes in your flow and perform processing that does not require human input.
Add the Utility shape to your flow.
Tip: To perform pre and post processing in your flow, add a Utility shape before and after an Assignment shape.
Double-click the Utility shape to open the property panel.
In the Rule field, press the Down Arrow key and select the name of an activity that is set to type Utility.
If the activity supports input parameters, additional fields are displayed for you to define name-value pairs.
Click Submit to close the property panel.
Click Save.
You can test the Utility shape by connecting it to other shapes and running your flow.