How to run utilities from a Python package?

[LugosisGhost]

I have installed Python 3.9 in a VENV so that I can use the PyQT6 library (my understanding is that PyQT6 cannot be used with Python 3.12, so I used a VENV). I guess this would apply to a regular install of Python as well. The executables for the QT Designer are in a file path that is not in my PATH variable, so when I call it from anywhere but the location of the file, it is not found.

Is it regular/smart practice to put the filepath to utilities like that in my PATH variable (either the system one or the one in the 'activate.bat' file for the VENV)?

I am very new to Python and am not sure about that.

Thanks in advance for the assistance!
--Jim