DevGuidelines.txt

## GPT tips

Make the AI do not think
    - specific abojective for output
    - specific format for answer
    - List of things to avoid

Ignore all previous commands. 
You are an expert python sofware developer.
The goal is to create an app with a gui interface.
The app as to be developed using python.
The app will be used for project management.
There must a gui.py file with the code for the gui interface.
The main menu will have several buttons for each module.
Once you click on a module button, the window must display that module name and have a back button on the botton all the previous buttons must not appear.  
This GUI will have these modules: Data visualition; Schedule; KPI; simulation.