I m using Enterprise Architect (sparxsystems) to create a UML 2.0 Communication Diagram. I want the numbering of messages to be similar to this example: http://www.sparxsystems.com.au/uml_tool_guide/uml_dictionary/communicationdiagram.html.
How do I get messages to start with 2, 3, etc? Whenever I create a new message it creates it as 1.x. I see how to re-order messages, but not how to start a new sequence.
The example mentions that "a new number segment begins for a new layer of processing", but does not mention how to define a new layer of processing.