1. A computer-based system for implementing simultaneously functionality using a single screen of a graphical user interface (GUI) for a wireless communications device (WCD), comprising: a first processor for a first specially programmed computer in the WCD for: displaying, on the single screen of the GUI, a first visual representation for a first application, the first application including: a first plurality of fields; and, at least one first function; receiving input data for the first plurality of fields via the GUI; and, a second processor for a second specially programmed computer, located separate from the WCD, for: identifying a first portion of the input data usable in a second application, the second application different from the first application and including at least one second function different from the at least one first function; accessing a history of data usage by the first application; analyzing, using the second processor and back end analytics in the second processor, the history of data usage; modifying, using the second processor, the back end analytics, and the analysis of the history of data usage, the first portion of the input data, wherein: the first processor is for presenting, on the single screen of the GUI and using the first processor, a second visual representation of the second application while maintaining the first visual representation on the single screen of the GUI; the second processor is for populating the second application with the modified first portion of the input data; the first processor is for: receiving, via the GUI and while maintaining the first visual representation on the single screen of the GUI, an input selecting the second application; and, receiving, via the GUI and while maintaining the first and second visual representations on the single screen of the GUI, a command to implement the first and second applications; and, the second processor is for implementing the at least one first and second functions.