Yes Jez is right.

You can't load Yamaha styles on Audya, but you can load the T5 styles in vArranger who will use your Audya as the master keyboard and as the sound module.
You just need to connect the USB cable to the PC

I did not tested this configuration during much time along with my audya to see if it stable enough to use it on live gigs.

You can use some tabs of the Audya like variation ABCD, FILL... to control vArranger, because it can accept sysex