There are 2 ways to define the independent stiffnesses for Inclined support:

 # Procedure 1:

1. While selecting the inclined support define the stiffness values in the Spring rate option. As shown in the figure below.

 # Procedure 2:

1. In this method, if you have defined all the inclined support. Open the input grid. Click the support tab.
   
2. Filter the same inclined support by double clicking the Type bar.
3. All the inclined supports are segregated. So, now you can edit the Spring rate values, breakdown force, Stiffness K1, K2 (Backward, forward), Phase K1 (Backward, forward), As shown in the snap below.