Hello Nishank!

Yes, basically a post allotment round for the IISERs takes place after the registration of the other candidates admitted through the previous allocation rounds is completed in their respective IISERs. It is pretty similar to mop up round as it is done to fill the left out seats only.

There is no particular procedure for this allotment round. The list of wait listed candidates are released in the official website. Thus, you have to set your hawk eyes on the website regularly or else you may miss necessary updates. You will be given a short period of time to pay the SAF fees and to exercise the float option. The call letter is received via registered email. The procedure is exactly similar to that of previous rounds of allotment.

However, the post allotment session did not happen the previous year(i.e 2019). But such mop up round did happen in 2018 and 2017 for the SCB stream. This year it may or may not happen keeping in mind the rank inflation in NEET and JEE.

Follow the article below for regular updates regarding IISER admission:-

https://www.google.com/amp/s/engineering.careers360.com/articles/iiser-admission/amp

All the best!