Mixed use property fire alarm panel location

[Yuriy Skripnichenko]

According to the code section 907:

F-907.6 Fire alarm zoning indicating panels. A fire alarm zoning indicating panel shall be located at a visible location at the main entrance of buildings with fire alarm systems, or at a location approved by the fire department.

I'm curious where the fire alarm panel should be located in a mixed use property in Philadelphia (store front with a unit at the back and another unit upstairs). All units have separate entrance so there is no common area or central entrance to the building. 

I understand that you must have the location approved by the fire department. I just want to see if anyone has this type of the building and where the panel located. 

Thanks