It was placement drive from my college, initially he started with introduction from all of them in a cabin.
There was no aptitude test, group discussion or any technical round
They have their own qualification round where you need took be error free its something like data entry
Once you qualify first round you will be called for training and assessment for a period of 1 week, in which you have to be error free for 5 consecutive days
Once you qualify the above requirement then you are placed