1. The drawer opens the billing system official website, enters the billing system, and logs in as an administrator; 2. The drawer clicks the system maintenance interface to enter the special area; 3. The drawer clicks on the user management interface and his name column to enter the modification interface; 4. The drawer enters the name to be modified, and then clicks the confirmation bar to save it. After the above steps are completed, the name of the drawer will be successfully modified in the billing system.

the function of invoice 1. Invoice is the most basic original voucher in accounting; 2. Invoice is an important tool for financial management, which can be used to record the contents of economic activities, such as the name and price of the goods or services sold by the seller to the buyer; 3, the invoice can reflect the tax collection, is the relevant tax authorities to control the tax source certificate; 4. Invoice is an important means for the state to supervise related activities in the economic field, maintain the harmonious order in the economic field, ensure the stability of national tax revenue, and protect the safety control of national property.