Lightroom and Topaz Plug-ins

I recently installed the Topaz Collection for Mac. It said it installed in Lightroom. Im new using Lightroom and I can’t find them. Can someone tell me where I can find them ? I went to Plugin manager but I can’t add them. Is that the area where I install them?

Click on ‘Develop’ , then click on ‘Photo’, Go down the menu to ‘Edit in’ and your Topaz plug-ins should be listed there.

You should also be able to right click on an image (Library or Develop) and see them under ‘Edit in…’