Event tiers can be set and updated by the “Admin & Compliance” roles.
Every other mParticle role, with the exception of the “Audience Only,” role will have access to view the current event tiers. You can find the full list of mParticle roles here.
If you’re creating a custom access role, to grant users the ability to tier events, you’ll need to include “Full Access” permissions to “Data Master Catalog”.