You begin facing a bunch of tables, turn to your left and you will see a gray reception, take a step towards the left side of this gray reception, in front of you, to the right of the bookshelves, there is a doorway go through it, and then enter the very first office on your right, it will be room number 4, once you're in the threshold, turn to your left and just take one step forward, you should be standing next to the second table, you are done.