The metadata-team project is a communication and "playground" area for exchanging data and ideas regarding everyting metadata*. The main envisioned usage for now is to add (PR) documents examplifying data annotation usage scenarios.
The standard usage would be to create a fork of the repositry, and then to add/edit the respective documents. For example files, the preference would be to create dummy cases as .json files.
(*Everything but the sequenceTM)