For the first floor, the entrance opening, which previously had a wooden deck, was replaced with a sliding glass door, and a conference room separated by a glass partition was placed in the center of the floor, allowing natural light to penetrate as far as possible to the back of the floor, while allowing the selection of meeting locations based on the level of confidentiality. The area at the far end can also be separated by curtains, allowing it to be used as a work area, meeting room, or storage area.