there is no specific "hidden" button on Samsung microwaves. Samsung microwaves typically have a standard set of buttons that are visible and accessible on the control panel. These buttons are used for functions such as setting the cooking time, power level, and selecting different cooking modes.
However, it's worth noting that different models of microwaves may have additional features or hidden functions that are specific to those models. These features are usually outlined in the user manual provided by Samsung. It's recommended to consult the user manual for your specific Samsung microwave model to learn about any unique or hidden buttons or functions it may have.