What might a president's schedule look like at
3:00 pm, 6:00 pm, 8:00 pm, and 10:00 pm?
If it's Trump, watching TV at all those times and or tweeting. This should be considered an acceptable answer because it's been reported as true by staff.
If it is another president who truly cares about doing his job for the people consider all the things a president does, then put them in the time slots. I.e.: staff meetings, reviewing documents,dinner, press conferences, meeting with government representatives and meeting with heads of state. Watch the news a few nights and you'll get a fair idea.