In regards to your first question:
I would assume then that Endnote recognises different references from the same author in a footnoting format? Is there a function to distinguish them?
You can look at the setting under Footnotes
For Repeated Citations and Author Lists
In regards to the second question
You can try this modified version of the style which for a Journal Article Short Form should produce Author (Year)
You can unzip the file attached to the post and then use the following steps to add it to EndNote.
Double-click on the downloaded file to open it in the EndNote software.
Click the File menu in EndNote and select Save As.
Click Save.
Close the style window.
The style has been added to EndNote.
Let us know if you have any additional questions.
Turabian 8th Footnote Year.zip (7.52 KB)