Subdirectories in Part 1 "Main Partition to hold ISO-Files"?

[VentoyMic]

I created an USB-Stick using

Code:

$ sudo bash Ventoy2Disk.sh -i -I -r 4096 /dev/sdb

Worked fine! Now I'd like to have subdirectories there to categorize the ISO-File, f.e.:

• Category A
  
•      Iso A1
  
•      iso B2
  
• Category B
  
•      ...
  

How can I achieve this in a way, that ventoy offers the subdirectories first for selection?