WFM Interval reporting/Averages and other reports

Hi, does anyone know how to pull a report that shows the total # or average number of calls received during a specific time of day for different times. Fox example: How many calls were received for X skill in the month of September from 7-10am and how many agents were available during that time? 

Also, a report that shows how many overtime hours were worked by all agents under a specific scheduling unit in a week or month?