Is it possible to add guided journey to a single journey instead of all?

Summary:

Using VBS it looks like you can set guided journeys at the page level, but how can guided journeys be added only to a specific journey? With the inclusion of AI agents, it would seem unusual to create an onboarding agent and then for this to be visible on all types of journeys.

Unsure if this can be achieved using functions?

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

24D