We're currently creating a new Jira program of work for our application developers, we want to create a custom field 'DEV Priority' the idea behind this is the developers pick up the lower value number (ie 1, then 2, etc).
For example, if I have 5 stories, 1-5
When a new story is created I want to be able to choose the priority, for example this new story I want to be priority 2, as a result I then need the existing story at level 2 to auto become level 3, and all others move up by 1 except for 1
Hope that makes sense