You stated "I want to add some medical and IT networking course institutes into this channel." whereas your thread's title indicates you wish to add courses.
If you wish to add institutes - we have a Training Center section which has been closed for new submissions, so you cannot add such institutes now.
If you wish to add a course - you can do so via the college page as stated by Vishal. You have the requisite permission to add courses to existing college pages if these have not already been added.
When people come at you with their worst, you should come at them with your best (advice given to Selena Gomez by her mother, quoted in Time magazine.)