Map Dependency Fields for 200 sub fieds

Map Dependency Fields for 200 sub fieds

Hello,

I have dependency fields like

1) City (2 cityes)
2) CityRegion (20 rows)
3) CitySubRegion (200 rows, about 10-20 per CITyRegion )

1) ZIP code (1000 rows, about 1000 per city)
2) Sales territory (parent - ZIP, one territory should include 5-10 ZIP codes automatically)

After import Database from excel
I find that MAP DEPENDENCY tool in ZOHO shows very small frames not possible to manage mentioned above FIELD DEPENDENCY.

Is there possibility to help me how to solve this issue?