How to setup a benefit plan which is not relying on any life event?

Summary:

How to setup a benefit plan which is not relying on any life event?

Content (required):

We already had a benefit enrollment program which require employee to provide dependent information and enroll different plan. This is working well.

Now we have a new car allowance benefit and we expect employee to enroll at any time. This new plan doesn't require any life event and it has no relationship with the existing program. How to set it up?

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

23C

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