Block Scheduling with Appointment Plugin

I can't see to figure out how to use this plugin for block scheduling.

My client basically only has four available session start times each day.

9 am
10:45 am
1 pm
3:30 pm

She takes a lunch from 12:15 to 1. Each session is 90 min and then there is 15 min in between.

This plugin is the whole reason I joined mpmu so I'm really hoping I can use it. Any suggestions?