how to create project with custom issues nesting its parent issue

[Mobily Monks]

We have to build a small project in JIRA Cloud for our internal Business Task management.

PRIORITY - To capture High level requirements, we have to create a PRIORITY.  Its more an equivalent to an Epic.

MILESTONE -Each PRIORITY would have many Milestones where a large PRORITY  is       broken down in to many Milestones.

And each Milestone will have many sub-tasks.

So, it would be like below structure

PRIORITY 01
         Milestone 1
                    Subtask 001
                    Subtask 002

         Milestone 4
                     Subtask 001
                     Subtask 002

PRIORITY 02
         Milestone 1
                 Subtask 0001
                 Subtask 0002
                 Subtask 0003
                 Subtask 0004

It seems I should create new Issue Types :

PRIORITY and MILESTONE ( standard issue type)

However, in this case, I am wondering

>HOW Milestones will get nested under its respective PRIORITY ?

> And HOW we can view/create above structure Report in JIRA cloud ?

We are new to JIRA so your right approach/advice is much appreciated.

[robert Mugabuhamye]

hello @Mobily Monks .

Unfortunately, there is no way to create an Epic level issue type in Jira.
You either have to use the Epic issue type or try apps such as structure.

Regards

[robert Mugabuhamye]

My advice here would be to stick to the Epic issue type as it is very well integrated with Jira.