Redmine

Hi all,

I am setting up a Bot which would add notifications (as notes or comments) in Redmine issues using the API.
As there can be lots of these automated notifications, I would like to filter them out in issues history.
What would be the best way to achieve this?

1. Using a custom tab in issues with a new type of notes: is there a plugin for this?
   
2. Something else?

Thanks!