PubMed: How to add library links to your PubMed account
Go to https://pubmed.ncbi.nlm.nih.gov/ and Log in
Choose here who you want to log in with and use the login information from that provider - here I have used my google account
Now your name will be where it used to be login - click on it and select Account Settings
Select NCBI site preferences at the bottom
And Outside tool under PubMed preferences
Find the Royal Library under D and check it. Then go back to the Preferences page. You will find that link at the bottom
When you then search PubMed and want the article, click on KB Links