How do I record Unpaid Expense in Zoho Book

How do I record Unpaid Expense in Zoho Book

Hi Team,
I have an query regarding booking of Expense in Zoho now i have purchased laptop and paid additional charges for its Maintainence and care so how do i record the same as i have not made the payment fro the same as soon as i record the transaction the option paid from ask from where the payment of expense has been done 

Kinldy Help