Hello again,
I have already solved the problem.
The issue was not related to the objects assigned to the views, those were configured correctly. The real problem was with the object assigned to the channels.
For example, I have Variable1 assigned to the object called “Mode”, and for this object the Operator role only had permission to view, not to control. However, when I changed Variable1 to use the “Manual” object, where both Operator and Supervisor have permission to send commands, everything started working correctly.
Sorry for the inconvenience, and thank you very much for your responses and help.