I just opened a new project, it got its own default issue type scheme with all the standard issue types (epic, story, bug, task, sub task).
Do I have to worry about other projects being affected if I for example add another issue type to the issue type scheme of this newly opened project? I am guessing the answer is no and that this is isolated to that new project.
Also, let's say that I'll leverage an existing issue type scheme from another project, what should I do with the issue type scheme that was created for my project?
Remove it? What is the best practice? What do others do usually?