I am a site collection administrator for a team site at my company. I'm trying to enable document sets in a new site, and I can't seem to make it work. I've followed a tutorial to create the document set site content type at the site collection level, but when I try to add it to the library, it's not there.
This is the tutorial I followed: https://sharepointmaven.com/document-sets-hidden-gem-sharepoint/
I get stuck at the "Add from existing content types" step, because "Custom Content Types" isn't in the drop down.
I went to the site collection level to enable "Document Sets" across the site collection, but the option is not listed on the Site Settings > Site Features page.
What is going wrong here?
The site is using Sharepoint Online, and it's using the modern experience.