Go to Devices filters
Select multiple devices (1)
Hover over the Actions menu [...] (2)
Click Notification Settings (3)
In the opened drawer select the desired events to edit (4) -> Edit Settings (5)
In the modal window turn on the desired channels (Email, Push, or SMS), select the recipients. If the recipient is not on the list you can search by typing the name or the email.
If you need to deliver notifications to all members of current organization, choose All members in the dropdown.
Press Apply and you'll see the event status and channels updated