hello hareesh 

UIET admission will be through JAC counselling and the admission form are available,till 20 june you have to submit the fees and on 30 june eligible candidate list will be appear.

however based on last year trends, it is difficult for you to get cs or IT if you are from other state but you can definitely get mechanical till last round.

for more information regarding this counselling go through this link

https://engineering.careers360.com/articles/jac-chandigarh-btech-counselling

all the best