In cases where a Sequence has not yet been defined for all categories, a Fallback Rule can be applied to manage sorting for categories that have not been optimized yet. 

Any available sorting rule can be used as a Fallback Rule, and these can be customized to fit any need. The Fallback Rule will apply for any categories where there are no active Sequences defined. If any Sequences are defined they will take priority over the defined Fallback Rule.