Import Billing Register:
You can now import all the billing related record in bulk, this will help you to save your time in creating manual bill for customers.
Navigate: from main menu click on 'Billing & Receipt(s) ---> Register ---> Click on Import Billing button'
You need to select the financial year and attached excel file which must be in .xls format .
These will create adhoc bills which are related to any tasks.
Download the format fill the data and import the same excel sheet.