send In-app bell icon notifications based on scheduled date and role field in Content type

Problem/Motivation

I need to send In-app bell icon notifications based on scheduled date and role field in Content type.
There will be icon on click of it he can see notifications, if there are any new notifications it should show some dot to show he has new notifications.

Steps to reproduce

I have created a content type , I have one field with scheduled date another with roles in the system.
As per the scheduled date and selected role we need to send notifications to user.

Proposed resolution

Please suggest how I can achieve this using this module

Remaining tasks

User interface changes

API changes

Data model changes