# Timeline

The Timeline view is Hiera's primary planning interface. It presents a Gantt chart with a hierarchical tree on the left and time-scaled bars on the right, giving you full visibility into schedules, progress, and dependencies.

## Hierarchical Tree

The left panel displays issues organized by your configured hierarchy (e.g., Initiative > Epic > Story). You can expand or collapse any parent to focus on specific branches. Each row shows the issue key, summary, and status.

WBS (Work Breakdown Structure) numbering is applied automatically, giving every item a positional identifier (e.g., 1.2.3) that reflects its place in the hierarchy.

## Gantt Bars

Each issue with a Start Date and End Date appears as a horizontal bar on the timeline. Bars are color-coded by status category and include a progress fill that reflects completion of child items.

### Drag and Drop

You can reschedule items by dragging their bars horizontally. Drag the left or right edge of a bar to adjust only the start or end date.

### Dependency Overlays

When dependencies exist between issues, they are drawn as arrows connecting bars. Arrows follow the link direction (e.g., "blocks" or "is blocked by"). Conflicts are highlighted visually.

## Zoom and Time Scale

Use the zoom presets in the toolbar to switch between time scales:

* **Day** -- granular view for sprint-level planning
* **Week** -- standard working view
* **Month** -- mid-range planning
* **Quarter** -- strategic overview with quarter bands

Quarter bands appear as shaded vertical regions to help align work with quarterly objectives.

## Swimlanes

Enable swimlanes to group issues into horizontal bands by a selected field (e.g., Team, Area, or Assignee). This helps visualize workload distribution across groups.

## Filters

The toolbar provides filters that apply to the Timeline and all other views:

* **Text search** -- filter by issue key or summary
* **Status** -- filter by status category or specific status
* **Assignee** -- filter by one or more assignees
* **Area** -- filter by area/component
* **Team** -- filter by team field
* **Quarter** -- filter by fiscal quarter
* **Labels** -- filter by Jira labels
* **Risk-only** -- show only items with a Risk value set

## Export

The Timeline supports two export formats:

* **PNG** -- exports the current visible chart as an image, suitable for presentations and reports
* **CSV** -- exports the underlying data as a spreadsheet for offline analysis


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