with latest vmware workstation player 15 version I could create ubuntu 20.04 VM, install open-vm-tools-deskop and use multiple monitors of my host.
With player 16 that is not possible anymore. Nothing happens if I select another option, the VM remains running on just one display. Within the VM, I can also see only 1 display.
This is reproducible with latest vmware workstation player 16, Windows 10 1809 and Ubuntu 20.04 as guest.