Capture is a browser bookmarklet that allows you to get reference information and send it to EndNote Online.
When you're on a webpage with a reference you want to save, click the Capture button.
You will be prompted to log in to your EndNote Online account, and then EndNote will provide the reference info it has found, and ask whether you want it sent to your EndNote Online or desktop account.
In EndNote Online, go to Downloads. Drag the Capture box to your bookmarks bar.
Click the 3 dots on the right hand side of the browser, then More Tools.
Click Extensions, then search for EndNote. Install the extension.