Which is not a rule of the annex

Explanation:

The annex was in the upstairs part of the Amsterdam building. Some of the rules were that during the office hours in the building, those in the annex had to stay very quiet and avoid walking around. No one could go downstairs. They were not allowed to flush the toilets or look out the window during the office hours.

because it took place after the war of 1812 had come to an end.