Associate a Purchase Order to a Client record. Find through: Clients > Client record > Related tab > Purchase Orders.
You'll see existing Purchase Orders or none at all if this is the first one. Click +New Purchase Order
Complete the fields required marked by a red asterisk (*), then click Save & Close to return to the Purchase Orders tab of the Client.
To edit a placement order, click the tick-box to bring up the top ribbon bar. From here, Edit, Delete, Assign, etc.