Hello Vijaylakshmi, 

Yes you need to attend the councelling in kuj for Bcom admission. And if you haven't attended the councelling the you must wait till the last phase of the councelling is done. If some of the seats will be vacant then you can get the seat but for that you need to contact them. So mail them regarding your quarry on their official email ID. 

I hope you will find my answer helpful. 

All the best.