NW 2013 Repeating Section and SP 2013 List(s)

Hello,

First of I am pretty new on NW and SP. 

I am working on a employee expense form/workflow and in my form I have two sections 1. Employee Information (Id, Name, Phone, etc.) and 2. is repeating section which keeps expense information (Employee Id, Expense Id, Expense Amount, etc)

I would like to use two different SP list one to keep employee records (1 section of my form) and second list to keep expenses (2 section of my form)

 My challenge is how I am going to save rows in repeating section to a SP list in a single line?

I have googled it and could not really find anything that is going to help me.

Thanks

Remzi