- Clone the directory and place the file "Qminimize" in a directory in your $PATH
    E.G. : I have mine in .local/bin but otherwise you can put it in /usr/bin

- Make the file executable with "chmod +x Qminimize"

- Add the keys to the qtile configuration :      
    Key([mod, "shift"], "m", lazy.spawn('Qminimize -u'), desc="Minimize window"), # - u to show the rofi menu
    Key([mod], "m", lazy.spawn("Qminimize -m")), # -m to minimize
    
- When the rofi menu is open press :
    "Enter" to unminize the select entry 
    "Shift + Enter" to select more choices and then "Enter" to confirm

- If for some reason the program doesn't work, to see what the problem is, launch it by terminal with:
     "Qminimize -m" to minimize the focused window
     "Qminimize -u" to show the rofi menu