Charon Cart Add Multiple Items

Using Charon cart makes things so much easier and this tutorial covers it all apart from one aspect I am trying to do.  I would like it so that I have a page of products in a repeat region with check boxes next to each one.  The customer can then check which products they want click on one Add to Cart button and all the items are added to the shopping cart as separate items.  Has anyone managed to do this? or written a tutorial on it.

Thank you in advance :-)