This tutorial assumes you've already logged in to your WHMCS admin panel
Now let's learn how to place a new order for a client
1) Click Place New Order
2) Select a Client from the list and the Payment Gateway with which they should pay
3) Choose the Product/Service this client will order
4) Enter the domain name
5) Click Submit Order
An invoice for the order will be displayed
That's it! You now know how to place a new order for a client in WHMCS