I have the same problem with tenant setup. The problem I have found with LW19 is that the dial 0 from any phone not assigned in the same tenant as the attendant console will not follow the setting in form 19. The attendant console is assigned tenant 2. Any phone assigned in tenant 1, when dialing 0, will only ring to the extension assigned as day in form 19 of tenant 1. Whether the system is in day, night 1 or night 2. Any phone assigned tenant 3 or above, when dialing 0, will only ring to the Night 1 extension assigned in form 19 of tenant 3 I can't seem to find the solution. Is it a flaw in the software?