Installation of multiple flash drives

Hello guys,

first time I’m texting on this site, anyhow down to business.

so I am trying to install over 100 flash drives with the Mac OS High Sierra, but I’m struggling with time and I’ve been told its possible to install more than 1 flash drive at the same time. (these are bootable flash drives for the high Sierra installer) I have had a look around online for the past few hours but can’t really find anything as all my searches ends up with how to create a flash drive with multiple OS’s on it, where I simply want 1 OS installer installed on multiple flash drives simultaneously.

I was hoping anyone here had any suggestions?

Thanks in advance!