Travel History - PGWP holder

[shomed]

Hi,

I have done my Master's in Canada and now living with the PGWP. I am not sure how should I fill the travel history.

Suppose: I came to Canada in 2012 and completed my master's in 2015. In this meantime I visited countries. How should I fill this up? Should I just write one way visit to Canada From 2012 and check ongoing or should I put 2015 as To? If I select ongoing, how to differentiate education and work in "Purpose of Travel"?

Thank you