Hello aspirant,

after announcement(2–3 days) of result, you’ll get shortlisting from colleges. After around 10–12 days they’ll send GDPI venue to shortlisted candidates. Your PI will happen after approx 1 months. For new IIMs, shortlisting starts after oldies are done(but before result declaration).

So we can say that after one month you will be called for PI , if you will be shortlisted than only.

For more information please visit this link

https://bschool.careers360.com/articles/what-after-cat-result

Hope this helps you

All the best for your future