Adding copyright information

I've done a fair number of scores without entering any copyright date and other information on the first page. Is there any easy way to add it to an already-created score (other than copying the whole finished score, creating a new score, and pasting the copy into it)? Most other things, such as the composer name, can be added later, and I wonder whether the copyright information could also be added later.

Thank you.

If this feature already exists and I just failed to find it, my apologies.