LED configuration for router ZBT WE826-E

I want to configure LED lights for SIM slot 1 and SIM slot 2 as follows:

1: When the user connects SIM in slot 1 the SIM1 led light should get turned ON and SIM 2 led light should get turned OFF.

2: When the user connects SIM in slot 2 the SIM2 led light should get turned ON and SIM 1 led light should get turned OFF.

Please guide me through this.

Here is the GPIO informaton

and GPIO 11&12 is not showing

GPIOs 9,11,12 are used by LEDs in DTS, you should see them in the different class: ll /sys/class/leds/