I want to add a new custom field on the edit/view screen of issues on ALL my projects.
I have quite a lot of projects as I run a consulting business, and going through each of them will be error-phone and time consuming.
Of course I could go through ALL projects like this, http://prntscr.com/8ajflp, but it seems like a pretty bad way of doing it.
So my question is: how do I add a custom field on ALL these issue screens when my projects are already made? 