The UC300ETH has two analogue inputs, so you can connect two of those. It can be done (for two) but you have to write the macro and the display handler.
If I wanted to monitor the motor current and temperature I'd install separate displays or would add a Modbus analogue input unit and would read the values through the Modbus plugin. Currently I am monitoring the total motor current and have temp sensors on each motor installed, but I have never bothered to connect the temperature sensors.