Can we prevent Managers from editing Performance Goals?

Summary:

Can we prevent managers from editing a performance goal once it has been added by an employee?

We don't use approvals for Goals and want to retain the functionality for employees to add and amend their own goals.

At the goal plan setting you can amend the 'Allow Updates to Goals By' to HR Specialist only, removing manager access but this also takes it away from the employee too and in our organisation employees add their own goals.

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