Task Grouping

[SIMON ORCHARD]

I require to report on four activity steps in one workflow definition, I have found a field "Task Group" in transaction SWI2 - Work Item Analysis. Can I group the four activity steps into one group and then report on all four steps in the one report and if so, how do I group the tasks?
 
Thank you in advance
 
Simon Orchard
Business Analyst, Information Systems
Ext : 2698