EverLogic supports up to three trades on a Quote / Deal. It is up to the Dealership, to determine the best option. There are a few options, if there are more than three trades;
Scenario 1: There are multiple units being sold. The best way to handle this is to split the units being sold into 2 (or 3) deals.
Scenario 2: One unit being sold. In this case, list the highest value trades on the deal, and then inflate one of them by the trade value of the fourth trade. The fourth trade then gets manually entered into EverLogic as inventory separately from the deal.
Scenario 3: One unit being sold. In this case, list the highest value trades on the deal, and then the dealership buys the last trade(s) for cash, they are entered into inventory, and the cash proceeds of the sale is applied to the deal as additional down payment.