QNX 7 (virtual machine) font in vmware player 15 is too small

I have Ubuntu 16.04 where I have QNX7 as a virtual machine running in Vmware player 15. My problem is that the font is so small in the virtual machine. I have tried different display resolution in the virtual machine settings. But no matter what resolution I set, the QNX7 display size remains constant. I have saw one solution to the similar situation with Windows 10 as a host machine : https://unix.stackexchange.com/questions/297569/guest-os-resolution-text-too-small-in-vmware-workstation-12-player But I could not figure out how to do the options "override high DPI scaling behavior" and select the System Enhanced for Scaling performed by:. and so on as in the above post. Any suggestion is very appreciated. Thank you so much.