Using Additional Files function in Lectora Pro Suite

I am having some problems with the "adding additional files" to the Title Properties in the Lectora Pro Suite. I have no problems adding the external files but after viewing the document the User clicks on the X to close that document and he closes the entire course in the SumTotal(ROD) LMS. I haven't figured a way to add an action to a file that has been added through the Title Properties to tell the system to close only the document and to go back to the course. Any suggestions?