I’ve been looking things up to find a solution because now I want to do this on my site (show repeater items based on Role) 
I guess we’ll see who gets it working first!
Another option could be writing code to filter the dataset, probably by roleId. Here are some resources I found which could help us both out.
• https://www.wix.com/corvid/forum/community-discussion/filtering-a-dataset-by-user-not-owner
• https://www.wix.com/corvid/forum/community-discussion/filtering-repeater
• https://www.wix.com/corvid/reference/wix-dataset/dataset/setfilter
• https://support.wix.com/en/article/corvid-wix-pricing-plans-paidplansplans-collection-fields#role-id-roleid