We have newly transitioned into Scaled Agile framework. We are currently in the process of PI planning. Our team is creating features based on the segregation of work. We see that some of the bulk of work only require Program Manager, Product Owner and the Architects. In this case if we create a Feature for the work, none of the stories under it will have any story points. But we still want to ensure the work is tracked to completion. How should we go ahead in this case?