After entering the building, the waiting area is on the right. You simply go in there, stand at the window and wait for one of the employees to open the window. To avoid confusion with the name, it makes sense to present the invitation or the identity card, the permission or the toleration.
After checking if you have an appointment, you will receive a waiting number. With this number you sit down in the waiting area and wait for the number to appear on the TV.
It is highly recommended to have a lawyer, because then all asylum and residence issues are clarified by him. There are so many laws and you do not want to do or say anything wrong, that may hinder the asylum procedure. All that really needs to be signed by you is that you have received the new ID. All other documents should always be checked by the lawyer.