VVX Polycom firmware Screen Text Size

For Polycom VVX series phones, we've had coimplaints that the text size on the screen is very small and hard to read for many of our employees. I see in the VVX manuals there is a way to increase that (I believe just a large or small setting) and that option is not available when I look at the firmware settings where it is indicated it will be on the rental/purchased phones we have. It would be nice to either default to the larger size, or provide an option for users to incresae the size (understanding there may be limitations due to the screen size).