An electronic device with a display, processor(s), and memory displays a video monitoring user interface on the display with a plurality of user interface elements associated one or more recognized activities. The electronic device detects a user input selecting a respective user interface element from the plurality of user interface elements in the video monitoring user interface, the respective user interface element being associated with a respective event category of the one or more recognized event categories. In response to detecting the user input, the electronic device displays an editing user interface for the respective event category on the display with a plurality of animated representations in a first region of the editing user interface, where the plurality of animated representations correspond to a plurality of previously captured motion events assigned to the respective event category.