The People Also Ask feature is a series of such dynamically loading questions that are actually related to the first searched query that shows in the search results on the desktop and mobile. When a particular user would be clicking on the question in that PAA feature, a drop-down would appear on such featured snippets that are actually called quick answers from a different search result.
For various PAA results, each time the user clicks an extra PAA question, then such new dynamically loading question is going to appear below. Also, there have also been some instances of a lot of PAAs but there are more that stop after a series of new questions. The PAA feature is initially showed in search results in 2015. Know that the organic search feature is actually part of the ongoing efforts of Google for improving the search experience and also keep those searches in the Google interface much longer.
Compared to the featured snippets, People Also Ask feature now moves around the first page of the SERPs. But, the majority of such PAAs showed at the bottom on that first search result page.
What you must know is that the People Also Ask feature has really grown in popularity at the time that Google first debuted this in 2015. You must learn that the PAA is really one of the growing search result page features and this is also a lot faster even such featured snippets known as quick answers.
What you should know is that such PAAs actually show in 70 percent of the search results that show snippet and this seems to be using the same source for answering the featured snippets and the different PAA questions. What you must know that this means that ranking such answer to a featured snippet and that PAA question may lead to many cases of exposure. An info that you must know is that one PAA may show up in more than 20 search result pages.
If you are going to try ranking for as the answer in the People Also Ask question, you have to optimize such like you would for that featured snippet. Make sure that you answer the question in a very concise, clear and in such authoritative manner. Having that question or answer to content would give a much better experience for the user by aligning the intent of the user with the relevant content.
It would be a fantastic thing that you really checkout the website for you to have more info on the advantages of such Google expanding the People Also Ask feature. Through this, you will have more knowledge on how you will be able to benefit from the PAA.