I assume we are discussing the SkyView EMS.
Only pin 6 supports these directly. If you need to hook up more, you can use a 200 ohm resistor to ground to convert any 4-20mA sensor to a 0.8 to 4.0V sensor, which you can use on most pins. You should be able to use up to 13 of them.
You'll need to make custom sensor definitions for all of these.