why M0 parameter is not showing in xctu xbee terminal.

To control the duty cycle of the PWM output everywhere in the documentations it is given to use the M0 parameter but in the XCTU terminal we are not getting such option. Also in the P0 parameter we are getting the option 2 as NA which was supposed to be the M0 option.

You might be following manual of some other XBee variant. Here is manual for S2C Zigbee showing IO parameters: