Need 401K Catchup in same week when 401K max is reached

Summary:

The expectation is that the 401K Catchup will begin processing in the same week as the 401K reaches limit

Content (required):

We have instances where an employee reaches his 401K limit with a partial amount in the week. Our expectation is that the Catchup would begin processing in that same week.

Example -

Employee normally contributes $400/week in 401K

In week 38 only $200 deducted because he reached $20,500 in contributions (max). He should also have $200 in Catchup contributions in week 38 but processing for catchup waits until week 39. How do we set the element to process in the same week?

Version (include the version you are using, if applicable):