WCAG success criterion: "All functionalities of the content are operable through a keyboard interface without requiring a specific timing of individual keystrokes, except when the underlying function requires inputs that are dependent on the path of the user's movement and not just the endpoints."

Assistive hardware, such as that used by motor-impaired users, often uses the keyboard interface. The operation of a website should be device-independent and accessible with both the mouse and the keyboard.

As a user who relies on keyboard control, I would like the calendar list and subscriptions to be enabled/disabled with the keyboard.

Acceptance criteria:

[ ] It is possible to de-/activate the display of the respective calendar with the Enter key when controlling and selecting the FlipFlop switches in the calendar list and the subscriptions.

WCAG success criterion: "All functionalities of the content are operable through a keyboard interface without requiring a specific timing of individual keystrokes, except when the underlying keystrokes, except where the underlying function requires inputs that are dependent on the path of the user's movement and not just the endpoints."
Conforms to BITV test test step: Usable without a mouse.