Group 1 - The article provides guidance on how to apply for the "data download function" for withholding clients in the electronic tax bureau, emphasizing the need for personal income tax filing permissions [1][6]. - It highlights that the data download function is only available for data within the last two years and must be performed on a computer that has not previously collected personnel information or filed declarations [6][4]. - The article mentions that the data download permission is valid for 72 hours after activation, urging users to complete their downloads within this timeframe [1][6]. Group 2 - It explains the process for logging into the natural person electronic tax bureau using the personal income tax app credentials, including the option for QR code login [3]. - The article details the steps to collect personnel information, including a prompt to download previously submitted personnel data if none has been collected yet [3]. - It provides instructions for querying unit declaration records, including how to view detailed declaration data by entering a verification code [4].