Hello @Georgina96
Yes, it is possible to turn them off. On your Charge 5, scroll down from the Clock Face and you can see DND Mode, it is set to Off. If you tap it, and set it to On, you won't get notifications or buzzes. You just have to remember to turn it off again in the morning.
I hope that helps.
Best AnswerHey!
I found it! Thanks a lot