Hi Rahul,
You can only show the sum of set elements in an in/out level, not at a field level.
![](https://www.edureka.co/community/?qa=blob&qa_blobid=2295122671808764704)
![](https://www.edureka.co/community/?qa=blob&qa_blobid=7813581619267644924)
Whereas in a group even Groups or sub groups can show sum of field values. This is one main difference between group ans set and the other being Group is a static and a set is dynamic.
Sub total /groups total -
![](https://www.edureka.co/community/?qa=blob&qa_blobid=7678812115600222019)
Grand total -
![](https://www.edureka.co/community/?qa=blob&qa_blobid=14026424631565197812)
Hope it helps!