This is tough to say. Honestly, I don't know enough about the report, but you are looking for TSK#, are there different TSK# displayed on each of the different detail sections? If they all are for the same TSK#, then yes, create a new group. You can suppress the group (you don't have to see it) for the page break to work. If each of the different detail sections represents a different TSK#, I would probably still create a new group, but there may be some other criteria to the report that would be violated, so it depends on what the report needs.
Hope this helped