Group 1 - The article provides a step-by-step guide for individuals to register and log in to the personal income tax APP, emphasizing the importance of accurate information input during the process [2][3][4] - It highlights the necessity for individuals to declare "Other Operating Income (Form A)" when engaging in other production or business activities, and the process to initiate this declaration [9][4] - The article outlines the importance of selecting the correct reporting year and residence for tax declaration, noting that these choices cannot be changed within the same tax year [7][8] Group 2 - The article details the information required in the "Tax Calculation" section, including automatic entries for "Entrusted Collection Income" and "Invoice Income," and the need for individuals to input any additional income [11][19] - It explains the process for entering costs and expenses related to business activities, as well as options for deducting previous year losses and personal donations [13][19] - The article discusses the "Exemption Information" section, where individuals can add tax exemptions or benefits, and the steps to save this information [15][16] Group 3 - The final steps involve reviewing the filled information in the "Tax Calculation" section and submitting the declaration, with an option to pay taxes immediately after submission [18][19]