Expand native application

[math7]

Thank you for your answers. What I specifically want to say is whether it is possible to modify or expand a Prime's Native Application, such as the linear solver; the manual says that all applications can be combined with others, and when an application is chosen in the program menu, an empty program corresponding to the chosen application appears first. In this program you can write code that extends the Linear Solver application for example, instead of those boxes, there are more boxes in the form to enter a 6x6 system?