JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Design Groups tab You must have at least one active design or rehab group set to a valid design or rehab option group. Design Pipe Group Lists the names of the design pipe groups. Is Active? Select the check box for the design groups to be included in the current design run. Design Group Option For each design group, you must select the design option group (set of possible pipe sizes) you want to use. Parent topic: Optimized Runs