The step property specified in seconds affects the resolution of the time picker and visibility of the dropdown.
If step is less than 15 mins dropdown is hidden
Use the helper-text attribute or add content to the helper slot to set helper content.
The min and max properties affect the range of times that will be available
in the picker.
Use the clear-button-visible attribute to display the clear button of an individual time-picker.
Dropdown is only opened when clicking the toggle button or pressing Up or Down arrow keys.