Gravity Voice Recog trigger record individual command via mcu

Hello. I'm having a lot of fun with the Gravity Voice recognition module but there are some issues I need some help with.

When deleting commands, is there a way to delete a single command? It seems to delete them all and then ask to relearn them all.

When deleting a command and re-recording a new one, is it possible to trigger that process from the micro controller or do I have to do it by talking to it only? 

Is there a way to lock out any commands, such as delete all? 

Is there a firmware for the device itself that I could modify?

This thing is great, but I cannot really use it due to the nature of some of these issues, and the environment it is going into.