A system for implementing simultaneous functionality for a wireless communications device (WCD), including a processor for a first specially programmed computer in the WCD for: displaying, on a screen of a GUI for the WCD, a visual representation for a first application; receiving, via the GUI, input data for a plurality of fields for the first application; presenting respective sensory representations of a plurality of applications via the GUI while maintaining the visual representation on the screen; and receiving, via the GUI, respective inputs selecting the applications while maintaining the visual representation. The system includes a processor for a second specially programmed computer processor separate from the WCD for: identifying respective portions of the input data usable by the applications; simultaneously populating the first application and the applications with the input data and the respective portions of the input data, respectively; and implementing the first application and the applications.