Converts the data frame into a grouped data frame where the following operations will be performed based on the groups. Grouping should be done before you want to aggregate values.
How to Access This Feature
From + (plus) Button
Click "+" button and select "Group By".
From Column Menu
You can also select "Group By" from the column menu of the column by whose values you want to group the rows.
Group Rows
Select the column by whose values you want to group the rows.