How do the clicks in the Khoisan languages work?

Khoisan languages have seen a decline in the number of speakers over the past few centuries due to various factors, including colonization, urbanization, and cultural assimilation. This decline has resulted in some Khoisan languages becoming endangered, with others facing extinction. As a result, there is growing concern among linguists and cultural preservationists about the need to document, preserve, and revitalize these unique languages.