On the Right Auxiliary Panel, you can find the option to view existing Links in a document. 

• Click on the Extras panel located on the right-hand side. 

Here you can see the links in your document sectioned by pages.

• Click on the Plus icon to add a new link.

• You can click on the three dots in the corner to expand/collapse the link structure for all pages.

• To edit a link you can click on the pencil icon next to the link.

• You can delete a link by clicking on a bin icon.

If you hover the cursor over Open a File or Go to Page links, you will see a preview of the file/page.