The ability to customize resources according to different working pattern has always been a feature of eResource Scheduler.
In organization, resources (people) have different working patterns, not everyone works for the same hours. People typically work Monday to Friday from 9 am to 6 pm with 1 or 1.5 hours break, there will also be the part time resources who only work 3-4 days a week; last but not the least there will be the overtime resources also who work Monday to Saturday and so on.
For a resource scheduling software it is very important to take these irregularities into account otherwise you might book a resource at a time when he is not available. Moreover, you can also add different holidays to different calendars.