You could look into https://habitica.com/apidoc/#api-Task-CreateGroupTasks and use hopla request -XPOST --body-param {something} {something} method/api/v3/tasks/group/:groupId
However, I don't know what values of {something} should contain.
The developers of Habitica might be able to help you out with that.
You could look into https://habitica.com/apidoc/#api-Task-CreateGroupTasks and use
hopla request -XPOST --body-param {something} {something} method/api/v3/tasks/group/:groupIdHowever, I don't know what values of{something}should contain. The developers of Habitica might be able to help you out with that.