WHM backup include other files

Is it possible to add files to the backup that are not already there?

I'd like to add csf config files as well as some other custom scripts on the server.

 

Thanks for the tips, but it still leave an unanswered question in there, I have some custom files that I like very much, and they do change from time to time and I'd like to keep them backed up. Is there a way to include other files, much like cpbackup-exclude.conf but in reverse