Hey

PAAR is the new way of registeration introduced which involves two step registeration for filling out the AIIMS application form 

1. Basic registeration 

2. final registeration

there are steps that you need to follow in the alloted time period .

make sure you keep a check on the dates 

here’s the link for all important information 

https://medicine.careers360.com/exams/aiims-mbbs

Alsi yes this is for NURSING  exam as well.

good luck