Open your EndNote Library first, and then switch to your Word document.
search for the reference you want to insert, highlight the correct search result and choose Insert If you want to edit in-text citations, you must use the Edit and Manage Citation function in the Word EndNote tab. Otherwise you will find that your changes have disappeared when you next open the document.

A secondary citation should be inserted using the Edit & Manage Citation options.
Citations inserted into Word can be formatted or unformatted.
Turn off instant formatting in the EndNote tab in Word or choose Convert to Unformatted Citations, when:
Endnote automatically creates a reference list of all in-text citations at the end of the Word document, arranged according to the selected reference style.

You can also create a standalone reference list that does not have embedded field codes.
Sometimes a Word document linked with an EndNote Library is not needed, for example, when you are sending your writing to your lecturer or submitting an article to a journal.
You can create a plain text copy of your document which is not connected to EndNote in any way.
Its is highly recommended that you backup (make a copy) of your Word document BEFORE you do this.
Note: The new document is no longer linked to your EndNote library. Any changes to EndNote records will not be updated in this plain text version.
If you are working on a large document such as a thesis you may prefer to create separate Word documents for each section or chapter. When all chapters are completed, you can merge all chapters into one long document.
Note: Citations in individual documents must all come from the same EndNote library for this process to work.
First make a backup of all documents you intend to merge.
For each document:
If you have downloaded EndNote but the EndNote tab is not visible when you open Word, try these options.
Open Word to check if the EndNote tab is now visible.
Open Word and see if the EndNote tab is now visible.
Occasionally the EndNote tab initially installs correctly but sometime later disappears.
Mac users may get the following error message that the EndNote CWYW add-in cannot be loaded into Microsoft Word:
Apple’s M1 chip (used in newer models of Macbook Air, Macbook Pro and Mac Mini) and some apps (including Word) need updates as a result.
Set Word to open with Rosetta. Follow these steps: