Web Service URL when saving AFO workbook

I am pretty sure there is a simple answer to this question. My ultimate goal is being able to schedule Analysis for Office Documents. I found a step by step document how to do so from user's perspective but I am running into issues where I need to configure BOE environment to allow saving and scheduling AFO document.

Here is document that outlines scheduling for AfO workbook.

http://scn.sap.com/community/bi-platform/businessobjects-bi-for-sap/blog/2010/08/13/scheduling-excel-reports-with-advanced-analysis-and-boenterprise-server

When I try saving Analysis for Office document to BI environment system prompts for Web Service URL. Where I could find information what needs to be done to enable Web Service URL?