You can also create multiple cuts with the Loop cut when you are still
selecting your new loops' direction. Before confirming the direction of
your cuts with the first left-click, you can either use the mouse wheel or
the plus and minus keys from your Numpad to create multiple cuts
(Figure 3.12).
Figure 3.12 - Multiple cuts
That option to add multiple cuts only work if you trigger the Loop cut with
their respective keyboard shortcut, which is CTRL+R.
After you add edge loops to the model, you can select the faces or any
other element to apply an extrude. That gives you a lot of freedom
regarding 3D modeling. It is possible to edit the number of cuts after
adding them with the "Loop Cut and Slide" menu that appears on the
lower right corner of the 3D Viewport. Use the "Number of Cuts" to edit
your Loop cut.