Is there a "group by" option

[Shampra]

Not actually.

Here is a request for that :

Grouping in Sets

Is your feature request related to a problem? Please describe. I would like to be able to group lines in a set view by a certain relation. For tasks, for example, it would be useful to see the tasks grouped by project or tag. Describe the solution you’d like Add a grouping option to views.