| Edition/Years | Total Teams | Groups | Teams per Group | Qualification Process |
|---|---|---|---|---|
| 2002–03 & 2003–04 | Top teams from zones | Round-robin by zone | Varied by zone | Final round-robin stage for top teams |
| 2004–05 to 2014–15 | Varied | Zonal/Playoff | Varied | Playoffs including semi-finals and final |
| 2015–16 to 2017–18 | 28 | 4 Groups | 7 | Top teams advance to playoffs, semi-finals, and final |
| 2018–19 | 37 | 3 Elite + 1 Plate | 9 / 9 / 10 / 9 | Elite group winners + best runners-up to quarter-finals, plate group winner to preliminaries |
| Current Format (2025–26) | 38 | 4 Elite + 1 Plate | Elite: 8 each, Plate: 6 |
|