Incoterms issue



I have a question I need to change the incoterms for a specific supply chain, the incoterms for one customer needs to be changed from DAP to DAT.I'm aware that incoterms are setup on a 'customer' level (within the Customer Master > Billing Page 2) however because my company is a shared company with other suppliers, we cannot make this change on the customer level.

Do you know if there is a way to setup the incoterms for this specific lane setup without affecting any other shipping lanes?

Thanks in advance.