All or a group of users can see missed calls

This is very shocking that this isn't already a feature. Here is a very common example for probably 50% of small businesses: Example- I have 4 users and when the call comes in all of the users hear and can answer the phone call because we all help each other with every call....if one of my employees are not at work and that same absent employee is the assigned user for the missed calls then no one will be able to see the missed calls. That situation would make us unable to call the people back that needs to be called back because we missed their call.

What are we supposed to do to cover this scenario