Advanced Roadmaps - How make external sprints visible on timeline - Data Center

[Michał]

Hi,

I can't get setup to show external sprints on the timeline. 

I'd like to

1. have one plan for a Team itself to manage their plan.
2. And another plan to show several teams for review purposes (with sprints on timeline)

I'm interested in showing External Sprints on the timeline that is described in the documentation.

screenshot form documentation.

I'd appreciate an answer or tip on how can I realize this need and if that's a configuration issue or bug or outdated documentation.

Advanced Roadmaps for Jira v9.4.3 Data Center

thanks

Michal