Esper's JSON Settings allow for advanced Android configurability beyond what's available in the standard Provisioning Template options. This feature enables users to customize various Android settings, including those under the System, Global, and Secure namespaces, using a customizable JSON configuration. To get started, users must enable JSON settings in their provisioning template and create a JSON configuration with child objects for each namespace, specifying key-value pairs for desired settings. For example, users can adjust font scale, data roaming, and default input methods using this method. However, note that custom configurations made using JSON Settings will override console UI settings and may require manual tracking of changes.