This research proposes an efficient algorithm that can be applied to drones to transport materials in indoor environment. This algorithm optimizes the time and reduces energy consumption during sharing and completing tasks between different drones. In this research, the results will be achieved based on the "Earliest Time Algorithm". We have modified this algorithm, where we have reached to get much better results in terms of saving time while performing various tasks from the drone. The performance of the algorithm is tested and analyzed for three different types of tasks and depending on the weight the drone carries.