Saving user-created system lines across sessions

Like most people the music I create uses repeat endings. Many times I need custom endings such as 1.-3. or 4., which don't seem to exist in the default list of system lines. I can create them in a session and use them but the next time I launch Sibelius (7.5) they are gone. How do I save custom endings that I create across sessions?

Comments (2) Bugs , endings, system, lines