How to push a new routeTree ?

[julienmiclo]

Hello,
after read all page of documentation, i can't find an answer.

I have two layouts and two specific routes tree. One public (welcome, login, password) and one restricted (dashboard, pages, ...)

What I want is check if my user is authenticated and push the "correct" routeTree. So the user can't go on dashboard by the routeTree.
How can achieve this ?
It possible to load the router without routeTree and push it in after ?

Thank you for your help.