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Supervisors define the priority of a new Dial List in the Priority field in the Create New Dial List page. In an existing Dial List, the Priority field is in the Dial List Detail section. By default, priority is not specified. Connect prioritizes all Dial Lists with a value in the Priority field over those without.
Priority in Salesforce Classic
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For information about defining priority in Dial Lists, see Creating a single Dial List (first-come, first-served), Creating multiple individual Dial Lists for agents or Editing a Dial List.