1. A method for managing user applications, the method comprising: capturing, by a data processing system, images of displayed user interface display screens of a running user application on the data processing system, wherein the data processing system uses an embedded instrumentation library in the running user application to capture the images of the displayed user interface display screens; calculating, by the data processing system, screen position coordinates corresponding to visual components within the displayed user interface display screens of the running user application; generating, by the data processing system, a display screen data package that includes the captured images of the displayed user interface display screens of the running user application and the calculated screen position coordinates corresponding to the visual components within the displayed user interface display screens; receiving, by the data processing system, a set of runtime policies corresponding to a set of visual components within the displayed user interface display screens of the running user application from an application manager server via a network in response to the display screen package being sent to the application manager server; retrieving, by the data processing system, a runtime policy for each visual component within the displayed user interface display screens that has a corresponding runtime policy from the set of runtime policies corresponding to the set of visual components; and enforcing, by the data processing system, the runtime policy for each respective visual component within the displayed user interface display screens that has the corresponding runtime policy to control when and where functionality of the corresponding set of visual components of the running user application is enabled and disabled based on a predefined time of day and a predefined geographic location of the data processing system during the predefined time of day.