###### Abstract
The scheduling process on multiple machines to produce standard parts of the product models is significant to cope with the dynamic requirement of the CCR to avoid shortage of the required standard parts of products in the planning horizon. However, in most of the companies, there is no control mechanism that can determine the schedule of parts to produce according to the order release from the planning level. Therefore, it is challenging to determine the production orders release according to the planned schedule of the customer orders for proper synchronization to reduce the rescheduling process. The drum buffer rope (DBR) method has been employed by various researchers for the material synchronization used by the CCR to produce the customized products [15; 16; 17; 18]. The synchronization can protect the production plans of the CCR resource from disruptions because of breakdown at the upstream resources. For example, a material buffer is placed before CCR to store the required material and, if some uncertain event occurs on the upstream resources, the CCR can have enough material in buffer to continue its production. The DBR method is significant to synchronize the demand of standard parts of the product models to produce with respect to buffer requirements of CCR in each planning horizon. The material buffer that contains standard parts of the mix model of products is continuously used by CCR to make different product models of the randomly arriving orders in each planning horizon. Therefore, the production order release of the standard parts of the product models is changing according to the buffer requirement in each planning horizon. DBR is also significant to give feedback information of the production order release and work in process accordingly in each planning horizon in upstream resources of CCR. The production planning schedule runs according to the need of the buffer because the buffer is used by CCR, which determines the performance of the whole production system. However, the need for a buffer is determined according to the material consumption by the CCR in each planning horizon. In literature, different DBR logics have been defined by researchers for production planning and control of manufacturing systems [19; 20]. For example, [PERSON] and [PERSON] [6] presented a DBR method in the MTO environment to give different order review and release policies. Moreover, [PERSON] and [PERSON] [21] used DBR based production planning and control to determine the relation of buffer sizes with the lead time up to CCR and how it can affect the specific performance measures in a flow shop environment. Furthermore, the DBR method has also been implemented in manufacturing industries [22], including packaging material [23], LCD plants [24], panel fabrication plants [25], and assembly shops for trucks and trailers [26]. In addition, the DBR method has also been implemented in the scheduling of aircrafts, improving labour relations performance [27], etc. [PERSON] et al., [28] implemented the DBR approach on multi-manufacturing projects and [29] introduced a dynamic DBR approach for time buffer for production planning and control in two machine capacitated flow shops. However, most of the literature investigated a time buffer that can control the time of release to produce the products, whereas the production release mechanism of standard parts of the mix model products based on the real time usage rate of the buffer on CCR and demand rate of product models in the planning horizon is significant to determine production order release in each planning horizon for MTO companies. This can reduce the production time of customer orders. Moreover, it can generate feedback of production order release of the standard parts of the product models according to the CCR requirement in each planning horizon. Furthermore, the buffer of CCR can be utilized effectively to produce customer orders in the planning horizon of the order schedule, which can give more profit in each planning horizon.