This type of transaction is similar to a HALF SIDED CCCF
Except you will be paying the Supplier from Inside the Trip for the Gross amount NOT the Net
to achieve this from with the trop select the Supplier Payments TAB
the select the desired Supplier from the trip List Box

Next you need to select the Part Payment Option

now the sector or sectors for the selected Supplier will display

Select the line item then the appropriate payment method AND enter the GROSS Amount in the Amount Field -
don't forget to Save the Changes