Example of how to add a Creative Commons licence to your papers:
You will decide on which CC licence to use, depending on how you want people to use your work.
See different types of CC licences - https://creativecommons.org/share-your-work/licensing-types-examples/licensing-examples/
EXAMPLE (Type the sentence below into a Header or Footer so it appears on each page):
© <year>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/