Genesys Cloud Resource Center provides functionality to bulk edit contact lists, allowing administrators to modify configurations for multiple contact lists simultaneously. Users can access this feature by navigating to Menu > Digital and Telephony > Outbound > List Management, then selecting the Contact Lists tab. The bulk edit process involves selecting multiple contact lists via checkboxes and clicking Edit to apply changes across all selected lists. The editable settings include time zone and retention type configurations, both of which are optional parameters that can be configured during bulk operations. A critical limitation exists regarding time zone settings: once a time zone is assigned to a contact list and saved, it cannot be subsequently modified for that particular list. For additional configuration details, users can reference the Create a new contact list documentation. The interface includes feedback mechanisms and links to related resources such as outbound dialing procedures, individual contact list creation, and contact management operations.