Cite While You Write is an add-in for Microsoft Word. It is available for Windows and Mac and can be downloaded in EndNote Web under Options --> Download Installers.
Cite While You Write allows you to insert citations as you work and then generate a bibliography. Most major citation styles are supported
To Access Cite While You Write in Endnote Web :
EndNote Web can format papers written in word processors that can save in Rich Text Format (RTF). This method requires you to insert citations manually using brackets, as in this example: {Harper, 1906} You can then use the Format Paper tool to generate a bibliography.