Account settings: telephone number and email

Hello Shelly friends!

I am exploring the notification function.
In a scene, I use:
DO
PHONE NOTIFICATION
"My scene triggered!"

Question 1: where can I set the phone number that should revceive the notification? Or is the message sent to the any phone that has the Shelly app installed?

Question 2: I remember that somewhere in the webinterface or app, I could set notifications for a device on or off. Where do you set that?
Example: When I go to the device menu, I see an item with a bell icon (second item) That says:

Zitat

Device name
Notifications
No notifications.
When something new arrives, you'll see it here.

This area stays empty.

Thanks a lot in advance for thinking with me!

MIHO thank you: exactly the answer that I needed!