When installing the program, make sure that you have the latest release installed, you can confirm as such on github:
Extract the contents into a folder you have specifically made for the tool and your .bin files.
Once you have saved a .bin file in your preferred location, what you'll need to do is go to where you have extracted Ritobin and open the Ritobin_gui application.
From there the application will open up so you can find where you have saved your .bin file.
After you have selected the .bin file you wish to modify, Ritobin will then ask you where to save the converted .bin file.
The converted .bin will be saved in a readable .py file which you can open and modify in any normal text editor or your preferred coding software.
Once you have finished modifying your .bin file and you are ready to put it into CSLoL-Manager for a test run, all you need to do is go back to your Ritobin folder where you drag and drop the modified .py file into the Ritobin.cli application.
It will then convert the .py file back into .bin where it is ready to be used.