Chemical plants are moving toward more-flexible environments, to adapt faster to market changes. For thesake of this flexibility, batch and continuous units might be integrated and operated along the same processingroute in a semicontinuous mode, featured by production campaigns of finite duration. Constant productionrates for the entire operation have been usually considered. Thus, production adjustments were achievedthrough storage resources, production line stops, and multiple product campaigns. The objective of this workis to improve the production schedules by developing a new concept for flexible manufacturing, which allowsone to program production rate profiles within each semicontinuous operation campaign. Hence, the extendedformulation presented allows to address the tradeoff between the opportunities that may arise when adjustingprocessing rates and the storage needs and opportunities. Finally, several case studies show that the proposedadjustment of the processing rates leads to less storage utilization and more-efficient production performance.