Open the consent settings, the dialog that lists the services by purpose with a switch each: through "Customize" while the notice is on screen, or through the "My privacy settings" link (rel="open-consent-manager") once the visitor has answered.
Examples
When I open the consent settings
And I open the consent settings
When we open the consent settings
And we open the privacy settings
When I open my privacy settings
Pattern
When(/^(I |we )*open (?:the consent settings|the privacy settings|my privacy settings|our privacy settings)$/, …)
Part of @webship-js/drupal-cms-steps (github.com/webship/drupal-cms-steps), a step pack for Webship-js 2.0.x.