Direct url string to compute route in Route Planner

For planning my walking trips I use these two planners:

- https://web.locusmap.app

- https://graphhopper.com/maps/

Both offer a convenient graphical interface which works just fine for my needs.

When I already know the coordinates of the points used to create the route, I would like to insert them directly into a url, and then just paste it in my browser in order to get the route.

I can do this in graphhopper, for example:

https://graphhopper.com/maps/?point=51.425721%2C-0.246686&point=51.423126%2C-0.247963&point=51.42329%2C-0.248923&profile=hike&layer=TF+Outdoors

I would like to do the same thing with locus web planner, but I can't understand how. Can you please suggest the form of the url string I should use?

Thanks!

Hilbert