What are the features of Receipts in appointments organizer software ?

"In receipts section you can create receipt to your staff if required and to your customers by just a few clicks. Can send email of the the receipt to the respective person. Can view and print the receipt if required Your staff can also create receipts on the company behalf or on their individual names according to the company settings. Company can create receipt on behalf of the staff and send email. Generate reports of the receipts Can lock the receipts at any time. So once the receipts are locked it cannot be edited. Can create receipts in iphone and android apps also."