Timeslips 2019 - Flat rate charge and hourly charge

I am attempting to bill a client a flat fee for one entry of the drafting of a document.  I input the entry as a flat rate task of $2,500.  I then entered all of the hourly rates on the invoice, which showed up fine and shows all of the time spent on those entries.  Is there a way that I can get the $2,500 flat rate fee to show up in the itemized billing section instead of just at the end?  

I have researched this and cannot seem to find an answer.

Thanks.