Linking to sections is similar to linking to URLs. To link to a section, it's necessary to know the ID of the section in question.
To find the section ID:
Open your website on a new tab and inspect the page (for example, if you're using Chrome, press F12, or right-click on the page and select Inspect).
Go to the Elements tab.
Click on the Select tool.
Select to inspect the section you would like to link to (the whole section should be 'highlighted', not a specific element on the section).
Find the section ID (in this example, the section ID is Twjx9vqX3K).
Copy the section ID – you will need it later. The point is that this section ID works as a URL when a hashtag (#) is inserted in front of it. So, when linking to a section, choose to link to the URL and paste the #sectionID (e.g. #Twjx9vqX3K) in the URL field.
Go to the editor and decide how would you like to link to the section (to paste the link in the header, button, image, etc.). For example, hyperlink text using a section ID would look like this:
When you're finished, don't forget to update the website for your changes to show.