Go to Accounts on the sidebar menu
Click on the Orders tab

Click on the Add Order button
If you would like to add an Opportunity for the Order please click Yes and click HERE on how to add an Opportunity

Click No if you do not want to add an Opportunity

Fill out the required fields under Order Details
Click HERE to learn more about configuring an Order Type and Order Sub Type
Select a contact for the Order under Contact Details by clicking the small contact card icon

Change the Order Status

Click Add Quote button