How do you add voices to custom creatures in the toolset?

[zombieslayer287]

So I created a seperate module, and when creating a custom level and adding creatures into it, I can't see a way to give said creatures voices. They're completely silent when they attack, get hurt etc. I've looked at every value under creature properties and tried with all, but none give them their voice.

 

Also if I wanted to create my own creatures and add them into the campaign, how would I go about doing it? Is it OK to simply delete exiting enemies/allies and add my own?