IF that outermost square is set to a “clear out a pocket” cut type, then no, tabs cannot be added.
IF you set the cut type to any of the other 3 options of Inside, Outside, or ON Path, then you will see the tabs option appear once the depth is set to full depth.
Unfortunately the simulation material does not display tabs, however, if you run the simulation and zoom in, and Hide the material , then you can see that the toolpath will in fact include lifts for the tabs as intended.
