Working with Marker Sets
Marker sets allow you to group into collections, any markers you wish. A set may be used to record a specific Use Case, which may involve the operations of various classes. Once a set is created it will be saved with the Model. Any other user using the Model will have access to that set. Sets would normally be loaded prior to the point at which an action is to be captured. For example to record a sequence involving a particular dialog, you might set markers for the areas to record, save the markers as a set.
When you begin debugging, prior to invoking the dialog you could then load the set. Once you bring up the dialog in the application, the operations you have marked are recorded. Review the recording history and create a sequence diagram.