To edit a trace start or trace end event you've set, choose [Event] from the [View] menu, select the trace start or trace end event (execution-related or access-related) displayed in the detailed information on the trace on the Events panel that is opened, and then click [Edit Condition ...] on the context menu.

Edit the events in a dialog box that is opened by this operation.

For details on how to edit in an execution-related event dialog box, see 2.17.4.1 Editing execution-related events".

Also, for details on how to edit in an access-related event dialog box, see 2.17.4.2 Editing access-related events".