Dear Organizers, For BraTS 2026 Task 2 (Pediatric Tumors), could you please confirm: 1) Does the final ranking use global DSC and global NSD only, or is global HD95 also included? Are lesion-wise/instance metrics used for ranking or only reported diagnostically? 2) How are "both-empty" regions (empty ground truth AND empty prediction) handled in the ranking (NaN-excluded vs counted)? 3) Are all six regions (ET, NETC, CC, ED, TC, WT) weighted equally in the final rank aggregation? 4) Are publicly released prior BraTS-PED pretrained weights / containers allowed in Task 2 final submissions? Thank you.