Where do I tag the copyright for my pieces?

[chris.bradshaw]

I went on someone's page to see what it will look like when I upload my music. Though the page for their works says "Copyright
Creative Commons Attribution Non-commercial No Derivatives 3.0" for many of their works (on the page you go to after selecting that piece" I don't see where that is entered on the page that open when I select "add work". I also don't see an option for anything but public domain if I try to add a score, etc. from the specific piece page.

Does the "add work" add a page for that work, and then I select the applicable copyright when I upload the files to that page?

Thank you!