Is it possible to have exception when there is an automatic assignment for an element?

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Hello,

We are currently implementing Individual Compensation for a client

We have created an element called Car Allowance - G14 that is automatic and recurring. This element has eligibility Criteria of G14, meaning that employees of Grade 14 will receive the element automatically.

However, the client has another element called Car Benefits - G14. The rule is that, if an employee has Car Benefits - G14, he should not be entitled to Car Allowance - G14.

Is it possible to achieve the above during the element configuration? Or, is there a workaround?

Thank you for helping us in advance