Google search "show options"?

[Inventor]

Hello,

I have created several websites, and would like to add a addition to the google search that shows other pages like this:


I do not know what it is called, so I wasn't able to get any results when searching in google.

Thanks!

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Edit:





I found it! Site links
Thanks.

[TalishHF]

Will you make a tutorial or something on how to do this?