You can specify how the connection ends are to be displayed at the source and target objects.
Prerequisite
You have the Method changes function privilege.
Procedure
Select one or more connections.
Activate the Start tab bar.
Click Properties. The Connection appearance dialog opens.
In the Arrow towards source field, click the down arrow, and select the required connection end.
In the Arrow towards target field, click the down arrow, and select the required connection end.
Click the Preview button to check the effects of your changes in the modeling area.
Click OK.
The ends of the selected connections receive the selected arrow heads. There are connections whose arrow heads depend on the value of the connection attributes. If you change the connection ends of these connections the value of the connection attributes is ignored. You can also change the arrow heads of connections easily using templates.