Is the "Fit camera view to viewport" function accessed via the "Home" hotkey available in the UI somewhere? I can hit NumPad 0 to enter camera view, then press Home so the camera fills the window. But I haven't been able to find this functionality anywhere in the UI.

Can someone tell me where that function can be found in the UI?

Or is it available exclusively via the Home hotkey?
Those are two separate functions, and have two separate places in UI menus:



or, you could find them through space bar search menu. like: