Streaming Members is a default widget that can be utilized right away:

While Featured Members is an add-on that needs to be purchased and activated on the site:

If activated on Homepage Section Order, Streaming Members widget will display the most recent members on the homepage on the fly without assigning any further settings:

While for Featured Members widget to work, a further setup is needed. Please refer to the article down below to learn how to feature members on Featured Members widget on the homepage:

How to Feature Members on Homepage