To set up tied courses, go to onRecord:
  1. Select Scheduling Setup from the Settings menu
  2. Click on the Scheduling Rules tab
  3. Click the +Add Rule button
  4. Give the rule a name (e.g "Tied Courses")
  5. Under Rule Details, choose for the course(s) to be in the Same Term 
  6. Choose whether this should be only for the Class Schedule or Student schedules as well
  7. Add 3 criteria to the rule for the course(s) to have the Same Room, Teacher, and Block
  8. Under Course Pairs add each course pair that should follow this rule
  9. Click Save
For more information on tied courses, please see this article: What are Tied Courses?