In "Assets\BlackRoseProjects\BlackRoseTools\MeshUtility", there is Example.unitypackage. If you need examples, import the content of the package. If you need an example for only one tool, remove the other tool's Scene directory from the selection.
The directory Examples will be imported. By default, examples were made for the Built-in render pipeline, but inside the Examples directory, you have packages with materials for other pipelines. You can import them to convert examples to desired pipelines.
In the Scenes directory, go to the tool directory that you need and open the example scene. The Comment component will be selected in the inspector with a detailed description of that example.