add

src/lerobot/envs/configs.py

@@ -30,6 +30,8 @@ class EnvConfig(draccus.ChoiceRegistry, abc.ABC):
     fps: int = 30
     features: dict[str, PolicyFeature] = field(default_factory=dict)
     features_map: dict[str, str] = field(default_factory=dict)
+    multitask_eval: bool = False
+    max_parallel_tasks: int = 5
 
     @property
     def type(self) -> str: