Hook for User Notifications addon

Hi,

I'm going to purchase the whole bundle for wpDiscuz.

I want to know if there are hooks for the different addons that we can invoke.

For example, the user notification shows notifications in the "bell" in the menu bar.

Is it possible (or exists a hook) to add custom notifications to that bell? That is, when something happens in the website, that we could be able to add a notification there… in the bell.

Thanks
Daniel.