Index page of the site as topics on google

The name of this is "sitelinks."

Who determines what and how it will appear on the google result page is the mechanism itself. You can not determine which links should appear. You can only request removal of a link or another, or all.

In order for the google engine to find the links and determine what is most relevant, obviously the site should have good semantics according to SEO recommendations.

Example, categories must be inside tags ul li

<ul>
<li>foo 1</li>
<li>foo 2</li>
<li>foo 3</li>
</ul>

There is not much secret, just follow the recommended standards as:

• Avoid poor content, for example, pages with poor content.
• Own a main menu with the most important site links.
• Avoid duplicate content. Here you should pay close attention to canonical links (it's another subject).
• Sitemap Submission
• Breadcumb
• Relevant number of hits.
• Clear description of the page.

Among other points.

The most important is probably the number of hits. Even a poorly done website with bad semantics, but with many hits, the sitelink is activated by google.

The most difficult point is to get a good and constant number of hits and the rest are mere details that make the search engine easier to interpret the pages.

First build a website with good content and good semantics that the rest will automatically appear.