“task based” group interviews?

i have an interview for miniso on Wednesday, the employer messaged me saying it was a group interview, since i’ve never done a group interview (have only ever had one previous interview) i messaged to ask how many other people would be being interviewed at the same time, he was quite friendly and responded saying that it was a task based interview as opposed to question based. i’m a little puzzled as there isn’t much information about task based interviews online, what should i expect?? what sort of things would i have to do and what is the best way to go about it? i also have no previous work experience so i’m a little worried i won’t do too well. any information or tips?