Explanation
The first thing that the consultant should do when enabling Course Connections for the first time in EDA is to set record types for Course Connections. Record types allow the consultant to define different types of course connections, such as instructor, student, or teaching assistant. Record types also determine the page layout and picklist values for each type of course connection. Running Course Connections Backfill, setting up Course Offering Schedule, and disabling Course Enrollments are not the first steps to enable Course Connections in EDA. References:
https://powerofus.force.com/s/article/EDA-Course-Connections
https://help.salesforce.com/s/articleView?id=sf.customize_recordtype.htm&type=5