I believe you can customize the site registration page, but it requires PHP programming.
Are you looking to change the appearance or how it works?
It can be done after registration but when they register ...
Just to clarify, when someone submits the Site Registration form, you want the Site Registration confirmation page to direct them to a page you choose (instead of being directed to the home page)?
I would like the person to be directed to a reserved page.
To do this, I believe you need to override the register.php single page.
This is the path and code for version 8.
I can look into adding the ability to set the directed page (after asking others community members if they would find it useful).
In my case I want the page to arrive on / connection ; I put connection to the place of Home ?