Hello Geek Girl,

We are using OnSignal platform for push notifications in Jot messenger and there many abilities for customizations and integration it with UNA. It is hard to answer on any possible questions concerning integration or how to use OneSingal. One Signal has very good documentation here https://documentation.onesignal.com/docs/web-push-sdk

If you like us to answer on questions, can you please create separate theme for each questions or create list of questions in one, I'll try to answer as soon as it possible.