We would like to have a transition for our service desk project which would only allow the entry of an internal comment. There doesn't seem to be a native way to do this. We were thinking a work around would be to create a "custom field" called "internal comment", and then use ScriptRunner to add the internal comment from the field.
Does anyone have better ideas? For instance, is there a way to have fields on a screen that are not issue fields? It seems a little clunky to add a "custom field", simply for the purposes of having a way to collect some information in a screen, especially when the field isn't meant to hold data permanently, but only as long as it takes to run a script which would use it.