I installed them. (When you know what to do, it is not hard.) Now I can change the document. The only problem is that when deleting a page, or adding a page, etc., the index and the page numbering  does not change. But that could be that I do not understand Adobe. Five minutes is hardly enough to learn to work with it.

This would be a funciton of typesetting. The table of contents is indexed to the document as it is typeset, not dynamically throughout its existence. If you were to delete all the pages except for the table of contents, it would still refer to all the same pages.

If this is a necessary part of your workflow, then it sounds like a WYSIWYG tool like Scribus or InDesign is more appropriate (unfortunately).