How can I maintain backlog(upcoming work) and assign epics to different projects in Jira

[Yashveer]

Dear Community members,

I have to setup jira for below scenario-

1. Where I have to maintain a backlog for upcoming/planned work for a department.

2. So I can assign epic/story to any project in that department based on their capacity.

3. Further to this I want to track the progress of each epic/story assigned to all projects.

For ex.

There are 3 projects (Project 1 , Project 2 and Project 3) under department A

Planned/upcoming work for department A = 5 epics.

Now I want to assign epic 1 to project 1

And assign epic 2, 3 to project 2

And assign epic 4, 5 to project 3. 

Moreover, I want to track the progress of all 5 epics at one place.

Could you please help me how to achieve this?

Thanks in advance!