Most office desks have only two legs, but large desks do have 3 legs, for example radial desks. If you like your those 3-legged desk to be height adjustable, you will need a triple motor standing desk.
Allcam EDF03T triple-motor height adjustable radial desks can be configured as L-shape (90°) or Y-shape (120°), to form a work-space of 3 (6, 9 …) or 4 (8, 12…) workstations. The desk frame are flat-packed, and easy to assemble. Below is an example of an island of three workstations.