@pio the only thing that comes to mind (I'm new to WordPress) is a structure of this style (birth of the premise that educational institutions is within an index.php): A page called Educational Institutions with its corresponding template php . In that template, you place the code that is necessary to carry institutions. Then, you create another page called Add new institution (with its corresponding template) and you make it the daughter of the previous one (Educational Institutions). You also make another Editorial Notes page (always with its corresponding php template) that is the daughter of Educational Institutions and sister of Add new institution. Now I see 2 options, depending on what you want: The first is that in the Editorial Notes code links created with the CPT-UI and Custom Advanced Fields by loops and querys. With this option in the same page of Editorial Notes, you would have the 3 fields (within it, being the same page). Now, if what you want is that each of these options go to another page, it would be to repeat the same process: Create the three pages (add new editorial note, categories and tags) that are sisters among themselves but daughters of Editorial Notes. Doing it this way, the URL would include the section.
Then, for the Categories and tags that do not go into Editorial Notes, you would do it by making two pages of daughters of educational institutions, sisters of adding new institution and editorial notes (and sisters among themselves of course).
I leave you an image of what the hierarchy would look like with the pages themselves, where each one hangs, etc. (I did not say in a section that they are sisters because they would not read well and would cause confusion but they are understood).
With the posts of the CPT-UI + Custom Advanced Files you would add the information of each section in the corresponding page and then by means of WordPress loops etc. showing the information.
