Antonio,
We've seen two variants on how this would be handled.
The first is using Expense Reports with a Receipt Type of "...Paid by Company", which allows end-users to enter the costs incurred, which can be later reconciled against the credit card payments.
However, realistically, we haven't seen sales staff actually willing to do this long term. Most customers say that they want this to happen, but usually within a few weeks we switch to...
The second way, which is to set up a Supplier for the Credit Card Issuer, then key in or import a Supplier Invoice that matches the Credit Card statement. You can enter in the cost distribution details to whatever level of detail you need.