open the camera and close it by clicking the purple button 1-2 are the cams you can see them in the doors and hall.
version 1 made the menu screen and other stuff version 1.1 made the office version 1.2 made the camera version 1.2.3 improved the camera version 1.2.7 added Cam 1 and Cam 2 (cam 2 is disabled) version_1.2.9_enabled_cam_2 version_1.3_added_the_mask_button_but_it_doesnt_work