How to use grouping in module properly?

Is this a view that you've configured using Views Tree, or using Views' built-in 'group results by' functionality? If you just have one level of hierarchies, it may be easier to just use the views built-in grouping functionality, and group by a taxonomy term or node reference title or something like that.

Marking closed since there's been no response for more than a month. Will re-open if need be.

Re-opening because I have the same question. I'm using Views Tree to create a hierarchical list of nodes that belong to taxonomy terms. I do have two levels to my term hierarchy. The terms are properly nested, the only problem is that the titles for each level appear on each entry as described above. Similar example, only multi-level:

How it displays now:

Course Category 1
- Course Subcategory 1
Course 1
- Course Subcategory 1
Course 2
-Course Subcategory 1
Course 3
- Course Subcategory 2
Course 4
- Course Subcategory 2
Course 5
Course Category 2
-Course Subcategory 3
Course 6
-Course Subcategory 3
Course 7

What I want is:
Course Category 1
- Course Subcategory 1
Course 1
Course 2
Course 3
- Course Subcategory 2
Course 4
Course 5
Course Category 2
- Course Subcategory 3
Course 6
Course 7

With D7 EOL going to close out, if still an issue in D11 we can re-open