As an administrator, you have the option to customise the template welcome message that pops up for staff in the chat. To do this please see the steps below:
Click "Customisation" in left hand side menu.
Click "Ambassadors" in sub menu.
Select relevant "Staff" or "Student" tab.
Click "Edit" button under welcome message text box.
Edit the message in the text box under "Welcome Message Customisation".
Click the "Save" button.