How to write the demand specification of residential property management system

Designed for property management companies and real estate companies. Comprehensive management of water, electricity, gas, heating, water management, shutdown and sanitation fees, as well as user-defined fees. Suitable for residential, commercial and residential, shopping malls, office buildings, factories, comprehensive residential areas and other types of property management. 1, two-level management system, setting the administrator and operator permissions. 2. Charges include: water fee, electricity fee, gas fee, heating fee, management fee, parking fee and sanitation fee. , and users can add three kinds of extra fees. 3. Establish an independent account for each owner, and deduct it from the owner's account when charging, which is convenient for management and can be charged in advance. 4. An alarm value can be set, and an early warning can be given when the balance of the owner's account is insufficient. 5. Default charging methods can be set-area charging and household charging, which reduces the workload of typists and facilitates data entry. 6. Provide general query and detailed query function for owner information, and you can view the monthly expenditure details. 7. Software skin changing function. 8. Provide printing and print preview function, which can print the monthly bill of each owner.