This space can be yours.
If you're an institutional client (e.g. a Metropolis or a Parish), this is where you can access the texts and music that are specific to you, like the fimi of your hierarch, the special hymns for your patron saints, and other services and music that you want to have available in your DCS.
If you are an individual client, this is where you can have a custom-made index of your personal library of texts and music. That way, you can open your stuff in the DCS, and not need to navigate to another program.
Check back here for more information about this as it becomes available.