I have a client who has several areas to be worked on: new features inside an Epic and several other bugs or changes from different areas. The client has different contact people that review the work: some for the tickets in the Epic and others for checking the bugs and changes.
Ideally I would like to see all of these in a Gantt (Roadmaps) view so I can present the client our timeline to release.
The problem I'm facing is I don't know how to show in that timeline the period of time we will do testing, client acceptance, fixes and a milestone to deploy