Match Leads on normalized email domain plus company name.
Choose a field and how it should win, then set a score. The highest-scoring record survives the merge. Rules are scored and summed — the highest total wins.
Scenario wizard, step 3 “Master” (survivorship). Field-typed operator sets: strings get Equals/Starts With/Contains/Is Populated…, numerics and dates add Greater/Lesser Than, the “Record” field offers Oldest Record, Newest Record, Owner By, Not Owned By, Most Opportunities, Most Contacts, Most Cases. “Save scenario” persists and closes the editor.