Expenses AUDIT % -Is it really not possible to use this feature without same timestamp

Is it really not possible to use this whitout same timestamp?

We got this answer down under , and think in what situation does approveres, approve at the same time?

The 50% audit sampling rate is applied only to ERs that are fully approved at the exact same timestamp.

If ERs are approved at different times (e.g., one at 10:00 and the other one at10:01), they are treated as separate approval batches.

As a result, both ERs may be selected for Audit, even though the sampling rate is 50%, because the percentage applies per batch, not across all ERs approved over a longer period.