Create a Communication Message

Step	Action
1	Open a diagram (one of: Communication, Analysis, Interaction Overview, Object, Activity or State Machine).
2	Add the required objects.
3	Add an Association relationship between each pair of objects that communicate.
4	Right-click on an Association to display the context menu.
5	Select the option to add a Message from one object to the other.
6	When the Message Properties dialog displays, type in a name and any other required details.
7	Click on the OK button. The Message is added, connected to the Association and Object instances.
8	Move the Message to the required position.