How do I use Grade Ladder, I configured it but I can't use it.

Summary:

I need to use Grade with steps, I registered but I can't call validate when I'm going to change salary or propose a new salary. Is it necessary to apply some profile? I couldn't find it in the documentation.

Content (required):

I am not able to use steps.

Version (include the version you are using, if applicable):

22D

Code Snippet (add any code snippets that support your topic, if applicable):