I was trying to fill out the graduate school application for graduate school. However in the "recommender info" part it asks me to enter the address, city, institute and title or position but I wonder what they are? should I enter the university address? is title or position like assistant or full professor? I would be very appreciated if anyone can help me with that.
These days, most people who could serve as a good recommender have a professional website that will give their full contact information, including their full title, mailing address, etc. You can typically find this either by Google or by going to their organization's website, which will somewhere have a list of faculty and other significant staff.
If this information is not publicly online (most likely to happen with a recommender from a company) then just ask your recommender to give their preferred contact information.