The best practice to run the Hourly Attendance Report when a school is using Blocks (MST.BL) in MST Sections (applicable to NON-Flex schools only), is as follows: 

Step 1:  Navigate to Attendance Accounting > Reports  > Hourly Attendance Report

Step 2:  Select Continuation (3 Hours Max Per Day) for "Which Report"

Step 3:   Enter "0" to use either the default Bell Schedule or custom Bell Schedule, if applicable,  to calculate class minutes

Step 4:  Select Use Bell Schedule for Passing