Group 1 - The article provides a step-by-step guide on how to declare stamp duty, including the process of entering the tax source collection page and adding stamp duty information if it does not appear automatically [3][4]. - It explains that for periodic declarations, the system will automatically bring up the recognized stamp duty items, and users can directly select and input the necessary information [3]. - The article mentions that if there are no other tax reductions, the default reduction amount will be zero, which is considered normal [4]. Group 2 - The system will automatically identify and check the "inclusive reduction" for those who meet the criteria for the "six taxes and two fees" reduction, displaying the adjusted tax amount [4]. - After successful declaration, users can either click to make an immediate payment or navigate through the tax payment module before the end of the declaration period [4].