Allowing non-admins to run OMRE

Hi, I’m attempting to allow a group of non-sysadmin data managers to run the OMRE workflow. I have added their role to the start, stop, and reassign task property of OMRE - Start. However, when a non-admin attempts to run the workflow, they received a “Failure” message in the UI and the log is indicating that the user “has no workflow permission to perform this operation”. Given that I’ve added their role to the workflow, what additional steps do I need to take?

Thanks much