Pjsip_notify

Hello, I’d like to add the command to reboot Snom phones in pjsip_notify.conf.
The file is not writable with Config Edit as it is auto-generated, so I didn’t edit it from Linux either.
The file doesn’t include custom files though, so I was wondering: how do I add commands to pjsip_notify? Can I just edit it despite the warnings? Thanks.