InfoPath Dev

I've ordered the webkit about storing the information from repeating tables into a sharepoint list (webinar 28 feb 2013). I've managed to get the OOTB example working for my own project. I also want to use the dashboard but don't understand to set it up. In the tutorial you say that I must bind the repeating section to the repeating node of the secondary datasource and after that all sections to the same repeating group. I'm sorry but can't follow this. I have two secondary connections, when should I use them and how can I set up the master-slave relationschip?

Is it possible to send me a working example, just as for the expense report?

I think I've managed the dataconnections but now I have another problem. I'm using the plus and minus images to show or hide the childs of an item. The problem is that's working only on the first child record. For the others I can't hit these images because the "master" record is only shown for the first child record.

Probably I've mist something with setting up the parent-chid relationship.

Also in the tutorial you subscribe how to hide section 1 (the titles), but you don't mention how to hide scetion 3