Amounts for one region
| A | B | C | |
|---|---|---|---|
| 1 | Region | Rep | Amount |
| 2 | East | Ana | 1200 |
| 3 | West | Ben | 850 |
| 4 | East | Cara | 430 |
| 5 | North | Dan | 970 |
| 6 | West | Eli | 1500 |
| 7 | East | Ana | 610 |
Formula: E2: =FILTER(C2:C7,A2:A7="East")
Result: Spills down: 1200, 430, 610
The include test A2:A7="East" is TRUE for three rows, so three amounts spill down from E2.