You can’t get beyond 5 V with just resistors though – you’ll need digital communications over the CC line, using a protocol called USB PD (Power Delivery ... C dock with a USB3 port, a HDMI ...
Check the Power Delivery (PD) charging power each ... or use a USB-C to either DisplayPort or HDMI adapter. The sixth USB-C port can handle 100W of PD 3.0 power input, 80W of which is reserved ...