| LS | Title | From | To | Approval date |
| SG5-LS91 | LS/r on lead study group concept and coordination mechanisms (reply to TSAG- LS21) | SG5 | TSAG; | 2026-09-07 |
| SG11-LS206 | LS/r on lead study group concept and coordination mechanisms (reply to TSAG-LS21) | SG11 | TSAG; | 2026-08-31 |
| SG3-LS20 | LS/r on lead study group concept and coordination mechanisms (reply to TSAG-LS4, TSAG-LS21) | SG3 | TSAG; | 2026-08-05 |
| SG21-LS194 | LS/r on lead study group concept and coordination mechanisms (TSAG-LS21) | SG21 | SG2; SG3; SG5; SG11; SG12; SG13; SG15; SG17; TSAG; SG20; | 2026-07-17 |
| SG15-LS131 | LS/r on lead study group concept and coordination mechanisms (reply to TSAG-LS21) | SG15 | TSAG; | 2026-07-10 |
| SG13-LS212 | LS/r on lead study group concept and coordination mechanisms (TSAG-LS21) | SG13 | TSAG; SG2; SG3; SG5; SG21; SG11; SG12; SG15; SG17; SG20; | 2026-07-02 |
| SG20-LS184 | LS/r on lead study group concept and coordination mechanisms (reply to TSAG-LS21) | SG20 | TSAG; | 2026-05-21 |
| TSAG-LS21 | LS on lead study group concept and coordination mechanisms | TSAG | SG2; SG3; SG5; SG21; SG11; SG12; SG13; SG15; SG17; SG20; | 2026-01-30 |
| TSAG-LS4 | LS on lead study group concept | TSAG | SG2; SG3; SG5; SG21; SG11; SG12; SG13; SG15; SG17; SG20; | 2025-05-30 |
