How do I take a deposit for a layby that has no sale/stock recorded yet?

Limestone Clothing
Limestone Clothing Member Posts: 1
edited December 2017 in Point of Sale
At our store we often order items in for our customers, we would like to take a deposit for these items and thought that perhaps we could create a layby account for them, this way we have their details on file.  Although the stock item would not have been created yet, as this gets done through reckon when the item is ordered from our supplier.  We can not put a payment on the account that is larger then the balance.  Any ideas would be appreciated.