I don't find the time selection very intuitive, it's not clear what dialog happens next when you click on a date or time etc I'd rather just have all the contro

I don't find the time selection very intuitive, it's not clear what dialog happens next when you click on a date or time etc I'd rather just have all the controls for date and time in a single dialog and a button that confirms the selection. Also, with the arrows next to the date, it's unclear if pressing it will skip to the next date, month, day or hour. There's no way to know in advance unless you're already very familiar with the controls.