To make changes to GUI, you should use QtDesigner, which is part of QtCreator bundle. You can find Qt GUI files in gui\qt directory. After finishing the changes, it is required to run buildgui.py script in the root folder, which will generate updated .py files into the gui folder.

It is discouraged to edit .ui files manually, as it may cause problem in the QtDesigner or PyQt build process. Never change generated .py files, as these changes will be overwritten.

Executables are built using pyinstaller. To install it, use pip install pyinstaller in your python environment. The executable is created with pyinstaller main.spec command in root folder of cloned repository. The output can then be found in dist folder.