How do I rotate objects in build mode on The Sims 4 for Mac?

Using the , (comma) and . (period) keys when the item is selected works for me - I image they chose those cause they have the < and > arrows on them, to indicate which way you're rotating.  They also work to rotate the camera when an object isn't selected (which personally I find slightly annoying, as I often try to rotate the view when moving an object to place it better, only for the object to rotate rather than the camera).