How to delete privilege from a role

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Hello everyone,

We would like to test a privilege and the impact that it has on the system. To do that we tried to delete the privilege from the role but as you can see in the attached screenshot the Delete Button is gray and we cannot select it.

I even tried to copy the role and create a custom role, but once again the Delete Button is gray and cannot be selected.

Does anyone know why and how to resolve this?

Thank you,

Agapi

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