After IPCC MAY 18

you can join ITT and Orientation any time after IPCC registration.. duration is 15 days each ...
nothing specifically to do first or last
you can go for anything first ITT or Orientation ..
you can take only 1 day leave that too if there is a case of emergency (maximum they say for 100% attendance).. So it is better you take a batch such that you don have exams in those days.....

Thanksss....

Thanks