Hello, the area division can be set through the dividing line, which can be set through horizontal and vertical division or custom tiling area.

Method 1. 3D horizontal and vertical division. Left-click the floor/wall with the mouse, and left-click the dividing line on the toolbar at the top of the screen. (This line segment is all one line and cannot be deleted in segments.)

Detailed tutorial, please click: https://www.aihouse.com/study/detail/Divide-Areas-in-Wall-&-Floor-696

Method 2. Custom tiling to set straight lines or area division;