To link 2 report I can explain with example, say you have 2 reports: "Primary Report" and "linked report", say you have 'year' and 'revenue' objects in primary report, and you wanna apply link on 'year' (so that it can be spilted in 'quater' in another report i.e Linked report), in the primary report apply a break on year, and then apply this formula at end of every break:
="<a href='https:/businessobjects/enterprise115/desktoplaunch/opendoc/openDocument.jsp?sDocName=Linked%20report&lsType=wid&sRefresh=Y&sWindow=new+[Year]+'>Linkedd Report</a>" |