The extension adds Sync Unicorn button to the Build menu and to the selected project context menu.
The button is visible only when it detects that the selected project has SyncUnicorn target defined. By clicking the button you execute SyncUnicorn target.
To define SyncUnicorn target in your project install Unicorn.MSBuild NuGet package in your WebRoot project.
To find more information about how to configure SyncUnicorn target in your project click here: Unicorn.MSBuild on GitHub