Robot system and method of operating the same

A robot system, comprising:

• a manipulator configured to receive a manipulating instruction from an operator;
• a slave arm configured to perform a series of works comprised of a plurality of processes;
• an output device;
• a storage device;
• and
• a control device,
• wherein the control device is configured, after a given first process, to output to the output device an inquiry of asking which operating mode among three operating modes of an automatic operation mode, a manual operation mode, and a hybrid operation mode the slave arm is to be operated in a second process that is the subsequent process to the first process, and execute first operation processing in which, when selected information for instructing the operating mode selected from the three operating modes is inputted from the manipulator, the selected information is stored in the storage device, and second operation processing in which, when the number of times that first selected information indicating the same selected operating mode is stored in the storage device becomes equal to or more than a first threshold number of times, the selected operating mode is outputted to the output device after the first process is ended.