You can set one page on your site as the default After Registration page.
Or you can use an external URL as your After Registration page if you choose.
You can set the default After Registration page for all Membership Levels in the Settings > Configuration > System pages section.
NOTE: You must set the individual dropdown for each After Registration page in the Levels section to “default” when using this method.
You can set the individual After Registration pages for each Membership Level in the Levels section.