I need to be able to show that another team's ticket is a dependency for one of my team's tickets on our roadmap. Is there a way to show do that in the roadmap plug in?
Welcome to the community. If you are referring to Advance Roadmaps for Jira plan, then YES. All you need to do is to update your existing plan's Issue Sources to pull into other projects' content. Afterward, you can create the dependency among your issues in the plan.