If an approver cannot edit expenses, follow these steps to enable the setting.
Click Settings, then click Approval.
Find the relevant approval type and click it.
Confirm the user is set up as an approver and that the Allow Approver to Edit checkbox is selected.
Click Save.
Going forward, newly submitted expenses under this approval type will be editable by the approver.
Historical expenses that need editing must be rejected and resubmitted.