Fill in the program subject, description by which the system can search easily, select a category for you program. If you public the program, everybody can use it to calculate. If you public the source code, everybody can browse the code of the program.
If you hope to make money from the program, you should input a price for your program, only paid users can calculate using the program and other users can only calculate with default value to test.
Note: In order to enable payment, you should to upgrade your account to Advanced, for details, would you please access Purchase webpage.