Screen Sharing as a Host

[matchyma]

As a host, when share screen (e.g. powerpoint), I can't have the option to have half screen (powerpoint) and half screen (audience view) now. Yet participants did. 

is there any function key that allow the host to do so? 

This is an important function as having only one screen monitor. 

The floating audience view often blocks the powerpoint presentation. 

Any idea/ thought to resolve? Will Zoom add this function to the host?