Click on the hamburger/three-horizontal-lines menu in the upper left on the scholar.google.com page.
Select "Settings" in the left menu.
Select "Library Links" in the left menu.
Search for Franklin & Marshall College and add it using the check box.
Save your settings.
Now when you search in Google Scholar, if the College Library can provide access to one of the items in your search results you will see a link that says "Full-Text @ F & M Library".