...

In the other hand, the Test Repository provides a tree like way organization at project level, where users can hierarchically organize Tests within folders and sub-folders. This folder like concept is common in some tools and resembles user's own files/documention organization in their computer's operating system. More info on usage can be found in Working with the Test Repository.

Thus, the first thing you have to decide is to whether use Test Sets or the Test Repository, or even both. For this, we recommend to look at some pros and cons concerning the adoption of Test Sets vs the Test Repository as detailed in Overview of the Test Repository. For some users, the question may be as simple as "Would our team prefer organizing tests in lists or an hierarchical approach instead?".

...

We also have some tips that might give you some guidance on the different approaches you may choose to adopt concerning tests organization.

...