This page explains the different methods you can use to insert in-text citations in your MS Word document.
Once you insert an in-text citation using the EndNote Tab (also known as Cite While You Write - CWYW) a full reference for that citation will be automatically generated at the end of your document or presentation. This page explains how to use the EndNote tab (CWYW) in MS Word.
This EndNote Training video tutorial shows how to insert citations in a Word document by selecting the "Insert Citation" button in Word and finding and inserting a citation:

To insert a citation of multiple works:

Alternatively, do ALT+1.
Your in-text citation appears where your cursor is and the full reference entry will appear at the end of your document.

To insert citations in the Author (Year) style, known as the narrative style in various citation styles, follow these steps:

The citation should appear where you have your cursor and the reference entry should appear in alphabetical order in your bibliography.
If you want to repeat a narrative style citation in the same paragraph in APA Style, follow these steps:
The citation will appear with the year excluded, and the author in parentheses. In APA Style, a repeated narrative style citation in the same paragraph should not be in parentheses. Leave this citation and then fix it at the end.
Q. What is the Author-Date system?
A. In the Author-Date system, you cite references to all material you have used as sources for the content of your work within your text (Flinders University, 2006). These are known as in-text citations. Full publication details need to be given in a reference list at the end of the text.
Different citation styles vary in the formatting of the Author-Date.
Reference & further info: