What feature can deploy custom configurations for apps installed via Install PKG?

The feature that allows for the deployment of custom configurations for apps installed via Install PKG is Configuration Profiles. Configuration Profiles are used to manage settings and controls on devices within a mobile device management (MDM) framework. When it comes to applications, these profiles can help specify various parameters, such as permissions, settings, and security features that the app should adhere to after installation.

With the deployment of Configuration Profiles, administrators can ensure that all necessary configurations are in place for the app to function according to the organization's policies and user requirements. This becomes particularly essential in environments where standardization and compliance are critical.

In contrast, while Remote Management allows for overseeing and controlling devices, it does not inherently configure apps. Custom Scripts provide a way to execute specific commands on devices, but they don’t provide the structured configuration approach that Configuration Profiles do. Application Management focuses on the installation and monitoring of the apps themselves rather than their configurations. Therefore, Configuration Profiles emerge as the most suitable answer for deploying custom configurations for applications installed via Install PKG.