If you created a new, customized template, you could add the template to your menu by adding a label and a pathname to the web.cst file.
Note: Generally you would use one of the templates referenced in web.cst as the basis for a new template. However, be aware that embedded SpeedScript templates require an additional .dat file. For example, wreport.w references a file named brwstmpl.dat. Within brwstmpl.dat there are specifications for input fields in the wizard. These specifications are surrounded by double pound signs (##). For more information on how to customize the AppBuilder, see the Progress AppBuilder Developer's Guide.