Which role is necessary to edit the Result from a Tax Rate Rule?

Summary:

A customer can't update the Result of a Tax Rate Rule in the tax configuration. I believe that is a role/privileges issue.

Content (please ensure you mask any confidential information):

When I access to the ERP of a customer, I can edit the rate that is related to one condition included in a tax rate rule. However, when a customer user tries to do the same, the Result column seems to be block, so he can't update the rate.

(As it can be seen in the image, values in the column Result are not editable).

However, from the perspective of my user: