Theme-Komponente zum Ausblenden von Themen, wenn sich ein Benutzer in einer bestimmten Gruppe befindet

[pacharanero (Marcus Baw)]

You might be able to direct users to accept the ToS by using some of the features in the Discourse Custom Wizard plugin:

Wizard Settings

There is definitely scope to set conditionals based on group membership and to change group membership from the output of the wizard.