Created a work flow and give the basic details name,id
Select record type as transaction and sub type as sales order.Event type as Approve.
Here we want to set context as user interface and we need to check whether this order is created from website. for this we give condition whether that sales order source the the website name(For eg Thermoguard) then this work flow triggered only when an order approved which created from webstore.
Now we will create work flow actions for 3 domain
Here we give conditions sales order source is website name and subsidiary .
And also we set the sender, recipient details. Choose the email template and attachment if any.
This workflow triggered when an order approved and send Email.