JEE

In the case of B.Tech/ B.Arch programme, admission is done on the basis of JEE Main Paper I /JEE Main Paper II or NATA score, respectively. Similarly, for ME/ M.Arch, candidates must have a recent valid score of GATE. There is an entrance exam of Chandigarh university. Or you must check online sight of registration for CET exam of university
Get log in to that site you have roll number in your
Email and date will be announced at that time. Of entrance exam. It is also done by online and walking though admission cell of university your self
If you get admission then you need to bring your all documents and previous paper that will help u to get admission in university.
2nd option to get admission in CU. Is that you need to know some reference inside the cu campus. He may be faculty or any student. You will get admission easily. Good luck!