If your mobile phone has been updated to Android 10 and you see the option for postpone a notification has disappeared, do not worry. You can retrieve it.
In the latest version of the Google mobile operating system the option to snooze notifications now is disabled by default, and we are us and that we need to enable this feature that arrived in Android 8.0 Oreo.
Allow postponement of notifications
To do this we have to go to Settings > Applications and notifications > notifications, deploy options for Advanced and activate the option “Allow postponement notifications.
as of this point, you can swipe to the side the notice to be able to postpone a notification, as we did in Android 8 Oreo and Android 9 Foot.