Organize a product dev via jira

[Aliaksandr Mikhailouski]

I have to organize a product development by a team and here are points I have to highlight:

1. Highlight if a person is overloaded.

2. Build a roadmap based on the tasks and its estimates and terms.

3. Autoupdates for the firs points based on the jira tasks statuses.

Could you help me with appropriate plug-ins or their constructions.

A perfect variant for these purposes was MS Project, but we try use and config Jira.