Hello, the area division can be set through the dividing line. It can be set by horizontal and vertical splits or free division or custom tiling areas.

Method 1. 3D Horizontal and Vertical Splits and Free Division. Left-click the floor/wall with the mouse and left-click one of them on the toolbar at the top of the screen. (This line segment is a single line and cannot be deleted in sections.)

Method 2. Custom Tiling Set Straight Line or Area Division;