The Cite While You Write (CWYW) Toolbar is automatically created in Microsoft Word when you download a copy of the EndNote software to your computer. The toolbar is used to add your references 'in text' as you write and it will also create a reference list or Bibliography at the end of the document automatically.
The toolbar allows you to move between your EndNote library and your Word document. Other functions allow you to edit and manage citations, change reference styles and convert your document to show unformatted citations.
System requirements and Word Processor compatibility for Windows and Macintosh
If you have mentioned the author or year in your paragraph then you may wish to remove them from your citation. You can also add page numbers to the citation if you have directly quoted a work.
If you have installed EndNote X7.5 or higher or EndNote X8 and the Cite While You Write (CWYW) toolbar does not appear in MS Word 2016 or the CWYW tools do not function as expected, please follow the instructions at the link. There are different steps for Windows and Mac.