Keep a manager from approving their own expense sheet

Hello,

Is there an easy way in the Human Capital Management module to restrict managers from being able to approve their own expense sheets?

Currently, their own expense sheets show in:

Human Capital Management>Manager Services>Expenses>Expenses to Manage

And they have the ability to approve the expense from there (even though we have asked them not to).

I am not extremely familiar with this module, so I may be missing an obvious solution here.

We are using IFS Cloud 24R1U4

Thank you!