Zendesk "Generate Public Reply"

Could it be possible to amend or create templates that pass through the Zendesk app.

When selecting the "Generate Public Reply" option, the template is: 

Greetings,

Panintelligence agent '*****' has invited you to join a remote support session.

Click the link below to join:

Join Support Session

Thank you

We use Macros and automated responses and have signatures in use in Zendesk so this template is not really much use so we have to trim it down to a simpler form, like: 

Click the link below to join:

Join Support Session

If we could have an area to create our own templates this would save us a lot of time and enable us to have a more professional message.