Temporary Do Not Disturb mode

A lot of people believe the "Do Not Disturb" status is a main status, which means you will leave it on permanently, in the case it's not.

Do Not Disturb is a mode to be left temporarily when busy/other, if you really want to disable notifications, you can turn them off in Notification Settings.

When you select the "Do Not Disturb" mode, it should prompt you to put a date/time where you want it to turn back to online or in how much time.

Example from: Google chat