Ok trying to place a house I saved to My Library, how?

Hi I have figured it out here r the solution: Menu, Go to Manage Worlds in the Menu, Choose a World (willow creek), Left click on the lot that is empty, Go to the option that says Build, Go to the Gallery, Open it, Click on the house you want to place, Bottom Right icon says Place it, Choose furnished or unfurnished, tada it is done happy simming