The polygon modeling command is only available under edit mode

this command is called Loop Cut and Slide short for Loop Cut shortcut key (Ctrl + R)

Blender loop cut operation design is very smooth. The basic steps are as follows:

first press the shortcut key on the object to be looped Ctrl + R. At this time, different previews will be generated with different mouse positions. When previewing, scroll mouse wheel up and down to increase or decrease the number of ring cut edges, and the preview effect will also change accordingly (this step is optional). If you are satisfied with the preview, click the left mouse button. Slide the mouse to move the cut edge of the ring (optional). If you are satisfied with the preview, click the left mouse button again.

The whole process requires two left mouse clicks