How to create live autofill search?

I am currently trying to create a wordpress search function that shows live results underneath the search bar. There is an example on the World Bank website (screens below). I’m not looking for an autofill like you would find on Google.com which completes words you type, rather I want it to find actual posts on the site.

How to modify a taxonomy that’s already registered

Today I needed to change the arguments on a custom taxonomy that was already registered by a third party plugin. Specifically I wanted to set the show_admin_column argument to true and change the rewrite slug so that it wasn’t just the taxonomy slug. In this case, it was a “People” post type with a “People Category” custom taxonomy.