Panid configuration

i have problem in the configuration of the panid of the dwm1001 which is asoociated with the rpi3 ! to create a gateway to setup the web manager !
i changed the panid to 0x65E2 but i didn’t how to save it in the file dwm1001.config like in the pic below ! which step i follow to save the changes
plz i need help
panid