Group 1: Invoice-related Operations - The process for selecting and entering finished oil invoices involves logging into the electronic tax bureau, navigating to "Invoice Business," and selecting the necessary invoices for submission [1][2]. - For digital invoice email delivery settings, users must access the "Tax Digital Account" under "I Want to Handle Taxes" and configure the email settings [3]. - To maintain project information on the electronic invoice service platform, users need to create project categories and add project details, ensuring correct tax classification codes are used to avoid invalid invoices [5]. Group 2: Login-related Operations - To modify the password for real-name authentication, users should log into the electronic tax bureau, access the account center, and follow the steps to change their password [7]. - For cross-regional reporting account login, users must select "Specific Subject Login" and enter the required credentials, including tax number and verification methods [8]. - There are three methods to reset the declaration password if forgotten: using the individual tax app, the electronic tax bureau website, or visiting the tax service hall [9]. Group 3: Tripartite Agreement Operations - To sign a tripartite agreement, users must log in as a business entity, navigate to "Comprehensive Information Report," and fill in the necessary banking information [9][10]. - For reporting entities, the process involves logging in as a cross-regional reporting account and following similar steps to sign the tripartite agreement [10]. - If the corresponding bank cannot be found during the agreement signing process, users should check the administrative division and may need to provide bank details to the tax authority for maintenance [10].