Number groups Number groups allow you to group Notify phone numbers and share workflows across grouped numbers. Number groups allow you to provide consistent functionality in different geographic regions using local phone numbers. Each phone number within Notify has an associated number group. Numbers within a group use the same workflows for handling incoming and outgoing calls and SMS messages. Numbers associated with a group appear on the Notify Phone Numbers related list on the Notify Phone Number Group form. Create a number groupCreate a number group to organize Notify phone numbers and associate them with inbound and outbound workflows.