Answer
Once you've clicked on the article title from your search results, locate the stable URL under the article publication information.
Copy the stable URL and paste it where you want to provide access.
Finally, add our proxy URL (https://login.dccc.idm.oclc.org/login?url=) to the start of the link.
Your link should look similar to this https://login.dccc.idm.oclc.org/login?url=https://www.jstor.org/stable/20159855.