If you already have a structure you want to use for your Gantt chart, you can select one of the existing configurations or create a new configuration for it manually:
- Open Structure Board and switch to the structure that contains issues that you would like to include in the plan.
- Use Layout menu to switch to either "Gantt Chart" or "Gantt + Resources" layout.
- You will see the Settings screen where you can set the project Start Date and select one of the available configurations.
- Click Save to save the settings and create the chart.
If you select a configuration, which has been shared by some user, this user can change it and it will affect your Gantt chart too.
To be able to create Gantt charts (even for existing structures) you need to have permissions to create new structures.