Im able to add a new one in each project, but what if i want to add the same new one in different kind of projects, l already try to add it in the admin section, but it does not show me that new option between my different projects
This isn't possible yet - there is no sharing of project configuration between next-gen projects.
However shared project config is in the works - see the public roadmap, Share Next-Gen Project Configurations and Workflows coming in 2020:
For teams that want to share next-gen project configurations and best practices, you’ll be able to copy a project, including custom issue types and workflows. Projects will continue to remain independent after you copy them. This will be particularly helpful for teams that want to share next-gen best practices across teams.
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