An electronic device including a rotatable member and an operating method in the electronic device are provided. The electronic device includes a housing, a rotatable member rotatably arranged outside a part of the housing, a display exposed through a part of a front surface of the housing, a memory arranged inside the housing, and at least one processor arranged inside the housing so as to be connected to the display and the memory electrically or functionally. The memory may store instructions that, when executed, cause the at least one processor to control the display to display a first group including at least one object corresponding to at least one basic function on a screen of the display, and control the display to display a second group including at least one object corresponding to at least one additional function related to a user or the electronic device, together with the first group, on the screen in response to occurrence of an event.