Alarm after x minutes after the first one

From Bartek Ostrowski on 2017/08/09 21:59:36 +0000

For example I wake up at 8 with qr code and I would like to do something after 10 minutes so I’d put another qr code on it and have to do it or alarm would be still playing.

Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/20478871-alarm-after-x-minutes-after-the-first-one