In Point Sale, you can split lines to charge more than one person.
In order to do this, click on the "Total" coloumn of that line of that you are wanting to split, a Pop Up with show "Payment Contribution"
Complete the prompt with the percentage or amount that you want to charge. Press Tab.
This will create a new line and split out the costs to invoice out separately.
In this example we have split out Line 2 and the new line at the bottom has been created.