Zoom in and out

This is my first time with doxy and I’m trying to get used to its shortcomings - particularly the utter absence of the possibility of virtual background! Hey, if Zoom can do it, why the heck can’t you? Please get this done, ASAP!

The other thing is this - I’m using an external logitech video camera on my pc and can’t figure out how to zoom in and out on my own image.

Can anyone help/