Note!
The instructions in this article do not apply to the new MediusGo interface, i.e. if you log in via app.mediusgo.com.
In the Administration Tool, under Organisation - Instance message, there is a tool for writing an internal message to the entire company.
Type the text in the box and click Save. The text will appear in a yellow banner at the top of the invoice application window. The message can have a maximum of 130 characters.