From the main menu, select Optimization Data > Candidate Pipe Sizes per Group, and enter the following candidate sizes for the five groups:
Note the following:
A value of zero stands for elimination of a pipe, without any additional cost. This only applies to parallel pipes. Elimination is only possible in Groups 1-4, which are potential parallel reinforcements.
Elimination is not possible for Group 5, which is a required pipe to a large user. The total possible combination of pipe sizes = 8x8x8x8x7 = 28 672. Close the table.
The program will be asked to enumerate through all possible combinations to find the least cost solution.