Program with the public for Fridays 8.30-16.30

Program with the public for Fridays 8.30-16.30
I go to submit the questionnaire for establishing the tax residence at 13. After I was passed from one office to another I came to the 2nd floor to find out that the lady in charge of taking the questionnaire has a program until 12.30 (and it was actually to another office).
Why not put your clear program on the site? For whom is the program displayed on the site valid? Security personnel?