For the moment, we can just group main operations and not sub-operations. But when we have a bill who is paid and the detail of this bill cover many specific expenses, it would be very helpful to connect the sub-operations of the bill to others operations (or others sub-operations).
The skrooge data model doesn't allow to group sub operations but: - You can assign a specific category to a suboperation - You can assign a specific tracker to a suboperation I don't think that's needed to group suboperation from different operation. I didn't plan to change this but if you can give me a good use case I can study that.