Genesys Cloud enables users to modify campaigns to dial different contact lists by accessing the Admin menu, navigating to Outbound > Campaign Management, and selecting either Voice Campaigns or Digital Campaigns. To reassign a contact list, users must first disable any active campaign by toggling its Status to Off, then select the target campaign to open its properties in the campaign editor. Within Campaign Options, users can choose a new contact list from the Contact List dropdown menu and click Save. The newly selected contact list will be used the next time the campaign executes. This functionality provides flexibility for organizations to target different contact lists across multiple campaign cycles without creating new campaigns.