Activity and Structured Activity help...

[kappy]

I've been using EA for about 3-4 weeks now and hit an issue.  I've created an activity diagram that I want to link to an action.  I know that if I create a structured activity when I 'Callbehavior' from the action I get the little fork in the bottom corner but I am also able to navigate to the activity by double clicking the action.  Is there anyway to add the 'double clicking and navigate' feature to an action that links to a regular activity diagram?

Thanks in advance,

Paul