If not using the Time+Billing module, you can create invoices using the Debtors functionality in HandiLedger.
To set your business information for invoices
Log in to HandiLedger and Select your entity.
Go to Debtors, Self.
Click New if no items exist or click Edit on an existing item.
Enter details as required, e.g., Address, terms, and late fees, then click Save, Close.
Click Close.