We have a need to add multiple controls for UD fields to a customization (still in the Classic UI). These fields will all go together in a single group box. Kinetic has instances where all of the fields in a group box are enabled/disabled by a single checkbox on the form. (See SalesOrder > Header Manifest > General Intl.) How to we tap into the mechanism that Kinetic uses to do this? EpiGroupBox does not have support for iterating over the controls within it. At best, enumerating each field GUID by GUID is cumbersome.