I'm exploring the new next-gen Roadmap feature in hopes to replicate an internal project plan developed using another solution... Is there way to build a roadmap that reflects estimated effort provided for an epic and resource availability?
It is not possible.
You should have a look at such add-ons as Big Picture or Portfolio:
Hi All! We’re excited to share the launch of an announcement banner that lets Jira site administrators communicate directly to their users across their Jira Cloud instance. ...
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