| Function | Persons | Existing | Required | |
| 1998 | 1999-2001 | |||
| General | Offline coordinator (ACOS chair) | J. Knobloch | 1 | 1 |
| Domain coordinator (DIG chair) | H. Meinhard | 0.5 | 1 | |
| Software librarian | M. Stavrianakou | 0.5 | 1 | |
| Testing coordinator | M. Stavrianakou | 0.1 | 1 | |
| Metrics collector | 0.3 | |||
| Data Base manager | RD Schaffer | 0.3 | 1 | |
| Data base analyst | 2 | |||
| Data aids | 0.5 | |||
| SW engineers -framework | 2.5 | |||
| System manager, operators | M. Ducellier | 0.5 | 1 | |
| Training coordinator | 0.5 | |||
| Documentation coordinator | 0.5 | |||
| Monte-Carlo production manager | M. Stavrianakou | 0.2 | 1 | |
| IT-ATLAS+Resource coordinator | S. Jarp | 0.8 | 0.8 | |
| Toolsmith | S. Fisher | 0.4 | 0.8 | |
| Tool developers | L. Tuura | 0.8 | 0.5 | |
| Review moderator | S. Fisher | 0.6 | 1 | |
| Reconstruction | Domain coordinator | G. Poulard | 1.5 | 5 |
| Domain architect | R. Clifft | |||
| Simulation | Domain coordinator | A. Dell'Acqua | 2 | 7 |
| Domain architect | M. Asai | |||
| Event | Domain coordinator | RD Schaffer | 2.6 | 5 |
| Domain architect | ||||
| Graphics | Domain coordinator, architect | J. Hrivnac | 4 | 6 |
| Analysis Tools | Domain coordinator, architect | M. Stavrianakou | 1.2 | 3 |
| Control | Domain architect | L. Tuura | 0.2 | 2 |
| Magnetic field | Domain coordinator | K. Bos | 1 | 2 |
| Domain architect | L. Chevalier | |||
| Calibration | Domain coordinator | 1 | ||
| Alignment | Domain coordinator | 1 | ||
| Detector description | Domain coordinator | RD Schaffer | 1.5 | 3 |
| Domain architect | C. Arnault | |||
| Trigger simulation | Domain coordinator | T. Hansl-Kozanecka | 8 | 8 |
| Inner Detector | Domain coordinator | J. Pater | 7 | 10 |
| Domain architect | A. Poppleton | |||
| Muon Detector | Domain coordinator | G. Poulard | 16.5 | 17 |
| Domain architect | P. Hendricks | |||
| Calorimeter | Domain coordinator | 5 | 9 | |
| Domain architect | ||||
| Sum general work | 19.7 | 51.4 | ||
| Sum system work | 36.5 | 44 | ||
| Overall sum | 56.2 | 95.4 |