Hi @Sam-I-Am - thanks, the issue was finding the permissions to add. But we got it squared away.
The role already had permissions to Employee records. It turned out that the Role also needed an "Employees" permission, but the error was on "Employee Records." For fiscal calendar, in order to expose the permission at all, we had to enable a feature that we weren't using. Admins have the permission but can't see it to add to rules unless the Feature is enabled. We could have enabled the Feature, updated the permissions, then disabled the Feature, and it would have worked - and we tested it in Sandbox. In the end, we elected not to do that, and instead, the workbook owner changed the workbook not to use fiscal calendars.