This method is similar to the closest pipe method, except it allocates demands according to a user-defined meter allocation. For example, the closest pipe method uses GIS technology to automatically determine how demands from meters will be assigned to system pipes. In this method, you are able to graphically assign which meters will be allocated to which pipes. The ability to assign meters to specific pipes is achieved through the use of the Meter Assignment dialog box. Demand allocation from the meters to the respective upstream and downstream nodes of the pipe can also vary according to the meter assignment option selected by the user.