Restart course with resume data switched on

Hi,

I'd be extremely grateful if someone is able to help with the following challenge please:

I have a module that takes the user between 35 - 50 minutes to complete (2 branches). 

If they get to the end of the module and have failed the quiz, this isn't considered 'successfully completed', so there is no way for them to get back to the beginning of the course. Obviously, if they successfully completed and wanted to take the module again in the future as a refresher, this would be fine, as Captivate is sending them to the beginning based on 'successful completion'.

Is there a way around this?  I've seen various posts about it, some talking about 'Advanced actions and Shared actions' but none of it is very clear exactly how to go about this in the best way. They also generally refer to SCORM. I'm using xAPI and publishing as HTML5.

Any help with this would be really appreciated!

Thanks,

Lee