[Bit-dev] Correct way to execute BiT CLI as root (to show system tray icon)?

We have BiT qt GUI (root) but no corresponding starter script for BiT CLI (root). Is there any documentation or recommendation how to start it? Background: I want to test if sudo backintime --profile-id 1 --debug backup-job shows the sys tray icon if I start it as root. What is the recommended way of starting "backintime" as root so that the sys tray icon appears?