New panel network communication

[Kashif205]

Hi
Can any one help regarding i have 3 panels in one building.but now some other company install 4th new panel and building owner want to add this panel with others.
I have database for all panels.
Can any one help in process?.
Is it ok if i use WHU4SDU for merge project database and upload in all panels or do i have to update main panel database and rules for 4th panel.
They want 4th panel will work seprate only alarm and faults will show on main panel