The cost cards show the status of various costs including :
By clicking on any of the statuses you will be brought to a filtered index where the selected status shown.
For example if i click on draft in the Purchase Order card shown below, i will be brought to the purchase order index where the 8 draft documents will be shown.
Each card also holds a link to create new costs :
New Purchase Order
New Supplier Invoices
New Credit Notes
New Labour Costs