2.8 add cube vs transform

in this video at the beginning he can add a cube on some face
so can this be still done in latest 2.8 this week ?
around 1 minute on video

https://www.bing.com/videos/search?q=blender+2.8+videos&qpvt=blender+2.8+videos&view=detail&mid=188E5BDC0FA30B2B082A188E5BDC0FA30B2B082A&&FORM=VRDGAR

there was also many icon on the left panel which seems to be gone
or can we make them re appear some how ?

thanks
happy bl