Overview
The Tasks Timeline (labeled as "Programme") displays your project's construction schedule as an interactive Gantt chart.
When linked with your 3D model, the Tasks Timeline becomes the master timeline for 4D animations. As you select dates or scrub the schedule playhead, the 3D model immediately shows what should be under construction, completed, or demolished at that exact point in time.
To open the Tasks Timeline:
Click the Tasks Timeline icon (Gantt chart/programme icon) at the bottom left of the Work Panel.
Note: This timeline requires an active project to be loaded and activated.
Timeline Interface Layout
The Tasks Timeline is divided into a table list of tasks on the left, and a Gantt timeline chart on the right:
Key Features
1. 4D BIM View Toggle
Located directly in the header toolbar of the Tasks Timeline:
4D BIM View Button: Click to enable/disable 4D BIM mode.
When active, unstarted schedule elements automatically hide from view, active construction elements dither, and completed components render solid.
2. The Date Scrubber (Timestamp Selector)
At the top of the Tasks Timeline is the Date Scrubber:
Click and drag the scrubber handle to adjust the active schedule date.
As the date moves, the 3D BIM model updates its rendering dynamically.
A red vertical line (strip line) marks the active schedule date on the Gantt chart.
3. Gantt Chart Navigation
Zoom Controls: Use the Zoom In/Out buttons in the toolbar to change the chart scale (e.g., viewing schedule by Hours, Days, Weeks, Months, or Years).
Scroll to Date: Click the calendar button in the toolbar to scroll the Gantt chart directly to the start date of the project schedule.
4. Task Filtering and Searching
You can find specific schedule items using:
Filter Row: Type text at the top of the "Task Name" column to instantly find matching tasks.
Header Filter: Click the filter icon in the column headers to filter tasks by status (e.g., Unstarted, In Progress, Completed).
5. Selection and Inspection
Single-click a task row in the table list or click its bar on the Gantt chart.
The task will highlight, and the Selection Inspector on the right side of the screen will display:
Task Name & Description
Start and End dates
Percentage Complete
List of linked BIM model elements (with their Behaviour Types: Construction, Demolition, or Temporary).
Selecting a task will also highlight its linked physical components in yellow/orange on the 3D map canvas.