Timeline View (Gantt Chart): What It Is & How It Works in PSOhub

Published: 1 June 2026

Audience

Admin
Controller
Project Manager

Objective

This article explains what the Timeline is in PSOhub, how it is structured, and what each of its key features does. After reading it, you will have the mental model you need to use the Timeline effectively for planning and tracking your projects.

Introduction

The Timeline is a visual view of your project plan. It displays all tasks and milestones laid out along a calendar, so you can see at a glance when work is scheduled, how long it takes, how tasks relate to each other, and how progress is tracking against the original plan.

The Timeline is part of PSOhub's Work Management module. It works alongside the List, Plan, Grid, and Kanban views — each offering a different way to interact with the same underlying plan data. The Timeline is the view best suited for schedule management, dependency tracking, and progress monitoring.

You do not build your plan in the Timeline. Tasks, tasklists, and milestones are created in the List, Plan, or Grid view first. Once your tasks have start and due dates, the Timeline becomes a live, interactive schedule you can manage directly.

How the Timeline Fits Into Your Project Workflow

The Timeline becomes useful once your plan has structure and dates. A typical sequence looks like this:

Create your project and open the plan
Build your tasklists and tasks in the List, Plan, or Grid view
Assign start and due dates to each task
Switch to the Timeline to visualize, adjust, and monitor the schedule

Tasks without start and due dates do not display correctly in the Timeline. It is best practice to schedule your tasks first in another view, then use the Timeline to refine and track them.

Structure your project with the grid

The Timeline is split into two panels that work together: a grid on the left and a chart on the right.

The grid displays your plan in a structured hierarchy: tasklists at the top level, with tasks and milestones nested beneath them. You can expand or collapse each tasklist to control how much detail is visible.

The grid includes the following columns:

Column	Description
Name	The name of the tasklist, task, or milestone
Start	The scheduled start date
Finish	The scheduled due date
Duration	The number of working days between the start and finish dates
% Done	Completion progress, shown as a percentage
Predecessors	Tasks that must be completed before this task can begin
Successors	Tasks that depend on this task being completed
Constraint Type	The scheduling constraint applied to the task (e.g. Start no earlier than)
Constraint Date	The date associated with the constraint
Effort	The estimated effort for the task in hours
Assigned to	The team member(s) assigned to the task

Visualize the project schedule in the Chart

The chart is the visual calendar to the right of the grid. Each row in the grid corresponds to a bar or marker in the chart:

Light blue bars represent tasklists, showing the overall span of work within that group
Green bars represent individual tasks
Diamond icons mark milestones
Arrowed connectors show dependencies between tasks
The "Now" line marks today's date, giving you a live reference point for where the project stands
The "Project start" and "Project end" markers appear at the boundaries of your project, showing the full planned span of the project at a glance

📌 Note: Tasks that are missing either a start or due date will also appear as diamond icons in the chart, the same way milestones do. If you see unexpected diamonds, check that your tasks have both dates assigned.

Project Start Date: Why It Matters

The Timeline uses your project start date as its left boundary. If a task is scheduled before the project start date, the Timeline will display it as starting on the project start date — even though the task's stored dates are unchanged.

If you notice tasks appearing earlier than expected, use the Change Start Date button to adjust the project start date. You can also allow AI Copilot to auto-reschedule affected tasks for you.

Always set your project start date coinciding with or earlier than your first task to avoid this issue.

Compare Planned vs Actual Schedule using the Baseline

A baseline is a saved snapshot of your project schedule at a specific point in time. Once saved, the baseline remains visible on the Timeline as a reference layer, allowing you to compare the original planned schedule against the current state.

This is particularly useful for identifying schedule drift — tasks that have been delayed or rescheduled relative to the original plan. Saving a new baseline overwrites the previous one, so baselines are typically set at the start of a project or at the beginning of a new phase.

⚠️ Important: Saving a new baseline overwrites the previous one. If you need to preserve a baseline for reporting or client communication, do so before saving a new one.

Rollup

The Rollup feature adds a summary bar at the tasklist level, giving you a phase-level view of your schedule without expanding individual tasks.

When tasklists are collapsed, the Rollup bar shows the full span of work within each phase: a green bar covers the entire date range, darker green areas indicate where tasks overlap, and gaps show periods where no tasks are scheduled.

This makes Rollup especially useful for senior stakeholders or project reviews, where you want a clean, high-level view of how phases are progressing without the noise of individual tasks.

💡 Tip: For the clearest overview, collapse all tasklists first using the Collapse all button in the toolbar, then enable Rollup. You get a one-line-per-phase summary of your entire project.

Link Tasks in Sequence with Dependencies

Dependencies define the sequence relationship between tasks — when one task must start or finish relative to another. The Timeline supports three dependency types:

Dependency type	What it means
End to Start	Task B can only start after Task A has ended
Start to Start	Task B can start as soon as Task A begins
Start to End	Task B cannot end until Task A has started
End to End	Task A and Task B must both end at the same time

Dependencies are shown as arrowed connectors between task bars in the chart. They can also be reviewed and managed using the Predecessors and Successors columns in the grid.

💡 Tip: To quickly edit an existing dependency, hover over the arrowed connector and double-click it to open the dependency details.

Navigating Through the Timeline

The Timeline toolbar includes controls for adjusting your view of the schedule:

Control	What it does
Expand all / Collapse all	Expand or collapse all tasklists in the grid
Zoom in / Zoom out	Increase or decrease the time scale of the chart
Zoom to fit	Resize the chart to display your entire project span in one view
Navigation arrows	Move forward or backward in time

These controls let you shift between a high-level overview and a detailed day-by-day view of your schedule.

Next Steps

✅ Create a Timeline for your project
Set up your plan with tasklists, tasks, and dates so you can open the Timeline and see your project schedule.
Create a Gantt Chart: How to Build a Timeline for Your Project

✅ Start using the Timeline
Learn how to adjust tasks, set a baseline, create dependencies, and track progress directly in the Timeline.
How to use the Timeline in PSOhub

✅ Track multiple projects at once
Use the Overall Timeline to get a portfolio-level view of all your active projects in a single consolidated chart.
Track multiple projects with the Overall Timeline (Gantt Chart)