The "Offc Pro" designation indicates that the font has been engineered for cross-platform compatibility and professional use cases.
When you download Dax Offc Pro, the specific usage rights depend on the license purchased: FF Dax Font | Webfont & Desktop - MyFonts
It is available in a wide range of weights—from Light to Black—and includes condensed and wide variants for diverse layout needs. Where to Download Dax Offc Pro