Create a single iso backup for every sub folder

Hi everyone!

I need a custom backup solution, here is the problem: I have to backup a folder (for example) G:\parentfolder\ that contains many subfolders: sub1 sub2 sub3…subn

When backing up I need to create a parent folder in F:\parentfolder\ that contains a file iso for each sub folder, so it should be something like this: F:\parentfolder\sub1.iso, sub2.iso, sub3.iso … subn.iso

I don’t know how to do it, I should manually run a backup for every single folder, which is impossible (there are too many and everyone need plenty of time to backup).
I was thinking about a custom script but I don’t know ho to make it work. Someone can help me?