Customize ohanah module on joomla

I used the ohanah module for event and I need major change I mean customization for this module or make an solution for my case to integrate with Joomla find the below requirements 1-Need to Separation the( calendar +upcoming event +the previous-courses event) which is mean just make alone from one side no link to home page 2-Need for course categories only not link with any modules which is mean when click for course info appear the course details only 3-Also don’t make any relation from course categories to calendar the details only review for any course. find below the URL and look into the main page part of Our Course on Course Categories in left side and you will see the link between the calendar and Categories which need to change it and Separation [login to view URL] find an example how is wrong and link the course with calender event [login to view URL]