How to create between subjects online experiment

Hi everyone.
I am trying to create a between subjects design online experiment with psychopy. I want to randomly assign my participants into four conditions where they will be presented with several different pictures and videos. If I use loop, participants will randomly see all pictures and videos in four conditions. So, I am wondering if there is any way to assign them into only one condition? Thank you so much~

Hi there,

I believe you need to use the Shelf function on pavlovia - you can find a guide to that here.