It will take few hours. You submit the paper and they will tell you to come later that day. The office has moved a bit further near Dillibabar going towards Anam Nagar. It is on a hill, no parking, the toilet is horrible in the office. BTW, there is a small print shop right infront of the building. If you pay them Rs 500, they will fill the form online right there within few minutes and direct you where you need to go. You also need a passport size picture.