How can we disable the Edit icon for Rate Based Salary Components for Line Manager

Summary:

Redwood Change Salary Page - we use Rates Based Salary Components in some countries. When a Line Manager is updating salary components, we only want 1 of the components to be Editable, all others need to be Read Only for Line Manager role. We do not see how to make the components Read Only in VBS.

Content (please ensure you mask any confidential information):

For Line Managers updating a Rates Based Salary employee, we need to make all salary components Read Only apart from 1, so the manager can only every update one component (HR Admin can update all components so no issue with the HR Admin VBS rule).