If you have questions about using mojoPortal, you can post them here.
You may want to first review our site administration documentation to see if your question is answered there.
How to create a note for the module or page?
I do not understand the question.
Now I convert my site into mojoPortal. My site has more than 20000 pages. Оn every page on the site is a service box (which see only the editors) on which editor makes notes.
How can I enable the editor to create a note? (which see only the editors)
There is no built in feature for private notes about a page. You would have to implement a custom solution.