When you have made sales of certain commodity that doesn't have a job related to it and you want to raise an invoice for it you can do so following the given procedure:

• On the dashboard, search for “Sales Invoice List” and select it (as shown in figure)

Following page would open up with a list of invoices.Click on “New” to create a new invoice.

• Details page will open up to create a new Sales invoice (as shown in figure)

You need to enter the following details:

• Sales Invoice type:You can choose the invoice type from here (Tax Invoice, Bill of Supply,Reimbursement Invoice)
  By default, it would be "Tax invoice"
• Customer: Enter the customer name for whom you want to raise the invoice
  If the customer does not exist, click on "Create New Customer" to create a new customer (as shown in figure)

Note: For further steps you can refer the article "How to create a new customer" 

• Invoice Date: Would be by default as current date. 
• Payment Due Date: Would be auto filled based on the customer template set
• Address and contact  details will be auto-filled by the Customer name.

If a customer has multiple addresses, you can select the required address for which invoice is raised from the drop-down (as shown in figure)

Note:If the Address does not exist click on "Create New Address" 

Refer "How to Add Customer Address during sales invoice creation " to know the process

• You need to select the currency in which you want to create the invoice from the Currency section (as shown in figure)
  By default it would be the currency set as per your company

If your invoice has to be raised in some other currency, you can do so

Refer article: How to create NON-INR sales Invoice to know the process in detail

• You have to "Add Items/Charges" along with its rate for which you want to create invoice in the given section (as shown in figure)

Once you add the respective item/charges all calculation will be done in an automated way

You will now see all taxes and charges are auto calculated based on Customer's Address"
Here Total charges is autofilled on saving of  invoice

• You can enter any remarks you want to in the "Remarks" section (as shown in the figure)

• Your sales person is auto-filled by the customer master data.You can also enter/edit the sales person related only to this transaction and mark his contribution

Refer article: How to change sales person for particular sales invoice only?

• Click on “Save and “Submit”  in the end

How to print a sales invoice

• Once you have made the sales invoice, you can print the invoice by clicking the print icon (as shown in figure)
  On clicking the icon, you will be able to see the preview of your invoice before printing

• Select the format in which you want to print your invoice and then click on "Print"(as shown in figure)