In the new version of the Spitfire Audio App, LABS has been moved to a new location. You can now find all of your LABS products by clicking on the LABS tab at the top of the application.
Any LABS libraries that you have yet to install will appear in the 'Not Installed' Tab.
You can also arrange your LABS libraries Alphabetically or by Release Date order by clicking on the tab highlighted below.
For more information about installing LABS, please see this article: LABS - How it Works