SEO. what is this called and how do i make it show up on my search results?

Hello

Sometimes I see search results in google search that has "links" underneath the search-result description.
here is an image of what i mean:
(cant insert the image for some reason so here is the link to it)
https://ibb.co/pJdSQcH


1. what is it called?
2. How do I make it show up on my website in google search?

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