Advance via Financial Accounting

Hi All,

I just want to understand the process of doing the advance settlements via financial accounting.

I have found several posts for the same.

http://scn.sap.com/thread/1905728

But what I would like to know is do I need to run settlements programs. Basically how do i test the posting?

Once the employee raises the request,advances are entered and approvals are sought. Then do we need to run PREC,PRRW??? How do i test the scenario.

Appreciate any help