Top rules report

HI all

I am new to the fortianalyser and am looking to put together some reports.  One of which is a top 10 rules report by bandwidth inbound and outbound (seperatley).  The appliance is have is a FortiAnalyzer-200B v5.4.5 GA build1235.  I assume i need to create a new dataset but i have no idea what query i should be using?

Can anyone help.

Thanks