I have a project that occasionally uses Epics, so I need to keep that alive, but I have a custom issue type that we currently create subtasks under. Due to the nature of our evolving operations, I need to re-build this issue type as an Epic type so that I can nest Issues under it. Currently, simply linking issues is not sufficient, because of how the interface handles these links. I need to be able to edit them from the parent issue, but unlike Epic links and subtasks, there is no way to do this without first going into the task and making the change.
I have found a way to [unlock the custom fields|https://confluence.atlassian.com/jirakb/how-to-unlock-a-locked-field-779158866.html], but unable to modify or create a custom Epic Link Relationship type field.
I have been instructed to do this without purchasing additional add-ons, and am stuck. Any help would be appreciated.