Add custom items example request

I want to add the sentry turrets into the limit plugin.
Iam no dev and i need an example how it should look like in the config or how i can add them.

Can someone give me a hint how to do it?
 

Do i need again wait several months for a reply?

The support here is terrible. Maybe you give up that plugin and let it manage by another DEV.
@Death
@Whispers88

@Cobalt Studios

Maybe i get this year a answer...