Use of restriction at Life event tab

Summary:

what is the purpose of this restriction at below in the life event tab.

Content (required):

I mean at life event tab, there are two place where we can configure life event, the first one we configure so employee can enroll in the plan, but why we applying the Life event at Restriction are, can you please share any example.

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

21d

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