Explanation
The consultant should create an Affiliation mapping to the Primary Chapter field in EDA Settings, and create a custom picklist value for Alumni Chapter on the Affiliation object, to meet this requirement. An Affiliation mapping allows the consultant to specify which field on Contact should be populated with a value from an Affiliation record when that Affiliation is marked as primary. A custom picklist value for Alumni Chapter on the Affiliation object allows the consultant to indicate which type of Affiliation is related to an alumni chapter membership. Creating an Affiliation record type for Alumni Chapter and a custom field for Primary Chapter on Contact, or creating an Account record type for Alumni Chapter and a custom field for Primary Chapter on Contact are not steps that use standard features available with EDA. References:
https://powerofus.force.com/s/article/EDA-Affiliations
https://powerofus.force.com/s/article/EDA-Affiliations-Mappings