Route through specific points

I’m very new to the GraphHopper and I’m not even sure if my question belongs to this category.
Before diving in and starting to understand the whole GraphHopper thing, I would like to understand if something that I would like to implement is possible with GraphHopper tools and how.
As a result I would like to see a map with specific points connected by the route and another set of points that are by themselves, not incorporated into the route. - Is that possible?
This with the goal of evaluating visually the potential of these standalone points to be integrated into the existing route.
To demonstrate, as a result I would like to see something like this:
The red point #1 is the point which potential of including in any of the routes (violet or green) I would like to evaluate.

Thank you for your time!