Documentation

Preplanning Gantt (PreGantt) · Jira Cloud · Atlassian Forge

Looking for a plain-language guide? The Knowledge Base explains every part of PreGantt step by step — plans, timeline, dependencies, Hourly mode, Jira sync, and more. Start there if you're new. This page is a shorter technical reference.

Overview

Preplanning Gantt lets teams build Gantt-style plans inside Jira before work exists as issues. Plan tasks, dates, dependencies, and baselines collaboratively — then transfer selected items into your Jira project when you are ready.

The App appears as the PreGantt tab:

On a Jira project (project-scoped plans)
On the global Apps menu (organization-wide plans)

Getting started

Install Preplanning Gantt from Atlassian Marketplace.
Open a Jira project and select the PreGantt tab, or open the global PreGantt page from Apps.
Create a new plan and add tasks on the timeline or in the row panel.
Set start/end dates, dependencies, and optional calendars.
When ready, use Transfer to Jira to create or link issues.

Key features

Plans

Project-scoped and global plans
Hierarchical tasks (summary / child rows)
Manual or automatic row sorting
Private plans with explicit sharing, or open collaboration (legacy mode)

Timeline & dependencies

Drag to move and resize bars on the Gantt chart
Dependency types: FS, SS, FF, SF
Cascade modes: off, forward, strict, group
Working calendars (global, plan, or resource scope)

Baselines

Save up to three named baseline snapshots per plan
Compare current schedule to a baseline (slip / variance)
Rename or delete baselines from the baseline menu

Jira integration

Pull existing issues into a plan (with filters)
Transfer planned tasks to new Jira issues
Two-way sync hooks for linked issues (updates and deletes)

Permissions & sharing

The App uses these Forge scopes:

read:jira-work, write:jira-work, read:jira-user, storage:app

Plan access levels:

Owner — full control, can manage shares
Editor — can edit plan content
Viewer — read-only

Jira administrators should ensure users who need to transfer work have appropriate Create Issues permission in the target project.

Data storage

Plans, tasks, dependencies, baselines, and settings are stored in Atlassian Forge app storage (KVS) on your Cloud site. See the Privacy Policy for details.

FAQ

Does the App work on Jira Data Center?

No. Preplanning Gantt is a Forge Cloud app for Jira Cloud only.

Can I use the App without creating Jira issues?

Yes. You can plan entirely in PreGantt and transfer later, or never transfer.

Who can see my plan?

By default, new plans are private — visible to the owner and users/groups/project roles you share with. Older “open” plans may be editable by everyone in scope.

Where do I report a bug?

Check the Knowledge Base first — it covers most How To... questions. Still stuck? Email support-preplanning@catandbulllab.app or visit the Support page.