Whispers are a staff-only feature that allows for private discussion between staff members inside a public topic.
Before whisper can be used, they need to be enabled by an administrator by checking
enable whispers in site settings.
When enabled, all staff members can create a whisper by starting to create a reply as usual, selecting the icon in the toolbar and clicking
The composer will indicate that the reply is a whisper:
Whispers are permanent, there is no way to convert a whisper to a normal post, nor is there a way to convert a normal post to a whisper. If you need to do so delete the whisper and re-post.