NX Stiffener By Support, first introduced in NX 9, gives you the ability to define stiffener landing curves by selecting the stiffener boundaries (supports). The software then automatically calculates the correct landing curve for the stiffener and creates the stiffener. Multiple methods are provided that support a wide range of stiffener support configurations.
Starting in NX 11.0.1, you will notice that placing multiple stiffeners between multiple supports is much more efficient. You can now select multiple start supports and multiple end supports at one time, and these can be selected in any order. NX then determines the correct support pairing and creates the stiffeners.