Many clients do not initially fully understand the concept of designing for above the fold. When the idea first came out, a lot of designers made their site with all the content crammed into the top. However, from material design best practices https://material.google.com/ we know that this approach creates a difficult user interface. The correct way to do above the fold is to place critical data into the head – so if you are a local business, we should have an address and phone above the fold, as well as your menu. Your critical items should not be hidden in dropdown menus, as these again hide content until a lot of style and JS have rendered. That being said, for mobile, dropdowns or jquery menus are needed, and should be part of the critical rendering path when possible. While a lot of this is technical, the takeaway should be that you should make the top of your site quick to load, with the most important info up top so clients can convert, and without jamming content up on the screen.